From 063452f8c68e000b35d3fe73b1972a20ca49a765 Mon Sep 17 00:00:00 2001 From: Huang Yang Date: Thu, 19 May 2022 10:32:31 +0800 Subject: [PATCH] libunwind 1.5.0 add loongarch support --- ...unwind-1.4.0-add-loongarch64-support.patch | 2799 +++++++++++++++++ libunwind.spec | 9 +- 2 files changed, 2806 insertions(+), 2 deletions(-) create mode 100644 0001-libunwind-1.4.0-add-loongarch64-support.patch diff --git a/0001-libunwind-1.4.0-add-loongarch64-support.patch b/0001-libunwind-1.4.0-add-loongarch64-support.patch new file mode 100644 index 0000000..55cee3b --- /dev/null +++ b/0001-libunwind-1.4.0-add-loongarch64-support.patch @@ -0,0 +1,2799 @@ +From 9b31f4b254cba6a1b9332d9326dbee9d6c807ddf Mon Sep 17 00:00:00 2001 +From: Huang Yang +Date: Wed, 23 Mar 2022 02:05:17 +0000 +Subject: [PATCH] libunwind 1.4.0 add loongarch64 support + +--- + Makefile.am | 6 + + configure.ac | 7 +- + include/libunwind-loongarch64.h | 139 ++++++++ + include/libunwind.h.in | 2 + + include/tdep-loongarch64/dwarf-config.h | 59 ++++ + include/tdep-loongarch64/jmpbuf.h | 34 ++ + include/tdep-loongarch64/libunwind_i.h | 251 +++++++++++++++ + include/tdep/dwarf-config.h | 2 + + include/tdep/jmpbuf.h | 2 + + include/tdep/libunwind_i.h | 2 + + include/tdep/libunwind_i.h.in | 2 + + src/Makefile.am | 37 +++ + src/coredump/_UCD_access_reg_linux.c | 37 +++ + src/loongarch64/Gapply_reg_state.c | 37 +++ + src/loongarch64/Gcreate_addr_space.c | 52 +++ + src/loongarch64/Gget_proc_info.c | 44 +++ + src/loongarch64/Gget_save_loc.c | 101 ++++++ + src/loongarch64/Gglobal.c | 58 ++++ + src/loongarch64/Ginit.c | 405 ++++++++++++++++++++++++ + src/loongarch64/Ginit_local.c | 80 +++++ + src/loongarch64/Ginit_remote.c | 56 ++++ + src/loongarch64/Gis_signal_frame.c | 71 +++++ + src/loongarch64/Greg_states_iterate.c | 37 +++ + src/loongarch64/Gregs.c | 109 +++++++ + src/loongarch64/Gresume.c | 132 ++++++++ + src/loongarch64/Gstep.c | 145 +++++++++ + src/loongarch64/Lapply_reg_state.c | 5 + + src/loongarch64/Lcreate_addr_space.c | 5 + + src/loongarch64/Lget_proc_info.c | 5 + + src/loongarch64/Lget_save_loc.c | 5 + + src/loongarch64/Lglobal.c | 5 + + src/loongarch64/Linit.c | 5 + + src/loongarch64/Linit_local.c | 5 + + src/loongarch64/Linit_remote.c | 5 + + src/loongarch64/Lis_signal_frame.c | 5 + + src/loongarch64/Lreg_states_iterate.c | 5 + + src/loongarch64/Lregs.c | 5 + + src/loongarch64/Lresume.c | 5 + + src/loongarch64/Lstep.c | 5 + + src/loongarch64/getcontext.S | 61 ++++ + src/loongarch64/init.h | 64 ++++ + src/loongarch64/is_fpreg.c | 35 ++ + src/loongarch64/offsets.h | 54 ++++ + src/loongarch64/regname.c | 50 +++ + src/loongarch64/siglongjmp.S | 8 + + src/loongarch64/unwind_i.h | 43 +++ + src/ptrace/_UPT_reg_offset.c | 36 +++ + 47 files changed, 2321 insertions(+), 2 deletions(-) + create mode 100644 include/libunwind-loongarch64.h + create mode 100644 include/tdep-loongarch64/dwarf-config.h + create mode 100644 include/tdep-loongarch64/jmpbuf.h + create mode 100644 include/tdep-loongarch64/libunwind_i.h + create mode 100644 src/loongarch64/Gapply_reg_state.c + create mode 100644 src/loongarch64/Gcreate_addr_space.c + create mode 100644 src/loongarch64/Gget_proc_info.c + create mode 100644 src/loongarch64/Gget_save_loc.c + create mode 100644 src/loongarch64/Gglobal.c + create mode 100644 src/loongarch64/Ginit.c + create mode 100644 src/loongarch64/Ginit_local.c + create mode 100644 src/loongarch64/Ginit_remote.c + create mode 100644 src/loongarch64/Gis_signal_frame.c + create mode 100644 src/loongarch64/Greg_states_iterate.c + create mode 100644 src/loongarch64/Gregs.c + create mode 100644 src/loongarch64/Gresume.c + create mode 100644 src/loongarch64/Gstep.c + create mode 100644 src/loongarch64/Lapply_reg_state.c + create mode 100644 src/loongarch64/Lcreate_addr_space.c + create mode 100644 src/loongarch64/Lget_proc_info.c + create mode 100644 src/loongarch64/Lget_save_loc.c + create mode 100644 src/loongarch64/Lglobal.c + create mode 100644 src/loongarch64/Linit.c + create mode 100644 src/loongarch64/Linit_local.c + create mode 100644 src/loongarch64/Linit_remote.c + create mode 100644 src/loongarch64/Lis_signal_frame.c + create mode 100644 src/loongarch64/Lreg_states_iterate.c + create mode 100644 src/loongarch64/Lregs.c + create mode 100644 src/loongarch64/Lresume.c + create mode 100644 src/loongarch64/Lstep.c + create mode 100644 src/loongarch64/getcontext.S + create mode 100644 src/loongarch64/init.h + create mode 100644 src/loongarch64/is_fpreg.c + create mode 100644 src/loongarch64/offsets.h + create mode 100644 src/loongarch64/regname.c + create mode 100644 src/loongarch64/siglongjmp.S + create mode 100644 src/loongarch64/unwind_i.h + +diff --git a/Makefile.am b/Makefile.am +index 8132fa4..b76135f 100644 +--- a/Makefile.am ++++ b/Makefile.am +@@ -44,6 +44,9 @@ endif + if ARCH_S390X + include_HEADERS += include/libunwind-s390x.h + endif ++if ARCH_LOONGARCH64 ++include_HEADERS += include/libunwind-loongarch64.h ++endif + + if !REMOTE_ONLY + include_HEADERS += include/libunwind.h include/unwind.h +@@ -89,6 +92,9 @@ noinst_HEADERS = include/dwarf.h include/dwarf_i.h include/dwarf-eh.h \ + include/tdep-sh/jmpbuf.h include/tdep-sh/libunwind_i.h \ + include/tdep-s390x/dwarf-config.h \ + include/tdep-s390x/jmpbuf.h include/tdep-s390x/libunwind_i.h \ ++ include/tdep-loongarch64/dwarf-config.h \ ++ include/tdep-loongarch64/jmpbuf.h \ ++ include/tdep-loongarch64/libunwind_i.h \ + include/tdep/libunwind_i.h \ + include/tdep/jmpbuf.h include/tdep/dwarf-config.h + +diff --git a/configure.ac b/configure.ac +index 5d62356..afa0210 100644 +--- a/configure.ac ++++ b/configure.ac +@@ -98,6 +98,7 @@ AC_DEFUN([SET_ARCH],[ + [sh*],[$2=sh], + [amd64],[$2=x86_64], + [tile*],[$2=tilegx], ++ [loongarch64*],[$2=loongarch64], + [$2=$1]) + ]) dnl SET_ARCH + +@@ -120,7 +121,7 @@ esac + + AC_ARG_ENABLE(coredump, + AS_HELP_STRING([--enable-coredump],[building libunwind-coredump library]),, +- [AS_CASE([$host_arch], [aarch64*|arm*|mips*|sh*|x86*|tile*], [enable_coredump=yes], [enable_coredump=no])] ++ [AS_CASE([$host_arch], [aarch64*|arm*|mips*|sh*|x86*|tile*|loongarch64], [enable_coredump=yes], [enable_coredump=no])] + ) + + AC_MSG_CHECKING([if we should build libunwind-coredump]) +@@ -176,6 +177,7 @@ AM_CONDITIONAL(ARCH_PPC64, test x$target_arch = xppc64) + AM_CONDITIONAL(ARCH_SH, test x$target_arch = xsh) + AM_CONDITIONAL(ARCH_TILEGX, test x$target_arch = xtilegx) + AM_CONDITIONAL(ARCH_S390X, test x$target_arch = xs390x) ++AM_CONDITIONAL(ARCH_LOONGARCH64, test x$target_arch = xloongarch64) + AM_CONDITIONAL(OS_LINUX, expr x$target_os : xlinux >/dev/null) + AM_CONDITIONAL(OS_HPUX, expr x$target_os : xhpux >/dev/null) + AM_CONDITIONAL(OS_FREEBSD, expr x$target_os : xfreebsd >/dev/null) +@@ -185,7 +187,7 @@ AC_MSG_CHECKING([for ELF helper width]) + case "${target_arch}" in + (arm|hppa|ppc32|x86|sh) use_elf32=yes; AC_MSG_RESULT([32]);; + (aarch64|ia64|ppc64|x86_64|s390x|tilegx) use_elf64=yes; AC_MSG_RESULT([64]);; +-(mips) use_elfxx=yes; AC_MSG_RESULT([xx]);; ++(mips|loongarch64) use_elfxx=yes; AC_MSG_RESULT([xx]);; + *) AC_MSG_ERROR([Unknown ELF target: ${target_arch}]) + esac + AM_CONDITIONAL(USE_ELF32, [test x$use_elf32 = xyes]) +@@ -237,6 +239,7 @@ case $target_arch in + arm*) enable_cxx_exceptions=no;; + mips*) enable_cxx_exceptions=no;; + tile*) enable_cxx_exceptions=no;; ++ loongarch*) enable_cxx_exceptions=no;; + *) enable_cxx_exceptions=yes;; + esac + ]) +diff --git a/include/libunwind-loongarch64.h b/include/libunwind-loongarch64.h +new file mode 100644 +index 0000000..806cf7d +--- /dev/null ++++ b/include/libunwind-loongarch64.h +@@ -0,0 +1,139 @@ ++/* libunwind - a platform-independent unwind library ++ Copyright (C) 2001-2004 Hewlett-Packard Co ++ Contributed by David Mosberger-Tang ++ Copyright (C) 2021 Loongson Technology Corporation Limited ++ ++This file is part of libunwind. ++ ++Permission is hereby granted, free of charge, to any person obtaining ++a copy of this software and associated documentation files (the ++"Software"), to deal in the Software without restriction, including ++without limitation the rights to use, copy, modify, merge, publish, ++distribute, sublicense, and/or sell copies of the Software, and to ++permit persons to whom the Software is furnished to do so, subject to ++the following conditions: ++ ++The above copyright notice and this permission notice shall be ++included in all copies or substantial portions of the Software. ++ ++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, ++EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF ++MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND ++NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE ++LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION ++OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION ++WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ ++ ++#ifndef LIBUNWIND_H ++#define LIBUNWIND_H ++ ++#if defined(__cplusplus) || defined(c_plusplus) ++extern "C" { ++#endif ++ ++#include ++#include ++ ++#define UNW_TARGET loongarch64 ++#define UNW_TARGET_LOONGARCH64 1 ++ ++#define _U_TDEP_QP_TRUE 0 /* see libunwind-dynamic.h */ ++ ++/* This needs to be big enough to accommodate "struct cursor", while ++ leaving some slack for future expansion. Changing this value will ++ require recompiling all users of this library. Stack allocation is ++ relatively cheap and unwind-state copying is relatively rare, so we ++ want to err on making it rather too big than too small. */ ++ ++/* FIXME for LoongArch64. Too big? What do other things use for similar tasks? */ ++#define UNW_TDEP_CURSOR_LEN 4096 ++ ++typedef uint64_t unw_word_t; ++typedef int64_t unw_sword_t; ++ ++typedef long double unw_tdep_fpreg_t; ++ ++typedef enum ++ { ++ UNW_LOONGARCH64_R0, ++ UNW_LOONGARCH64_R1, ++ UNW_LOONGARCH64_R2, ++ UNW_LOONGARCH64_R3, ++ UNW_LOONGARCH64_R4, ++ UNW_LOONGARCH64_R5, ++ UNW_LOONGARCH64_R6, ++ UNW_LOONGARCH64_R7, ++ UNW_LOONGARCH64_R8, ++ UNW_LOONGARCH64_R9, ++ UNW_LOONGARCH64_R10, ++ UNW_LOONGARCH64_R11, ++ UNW_LOONGARCH64_R12, ++ UNW_LOONGARCH64_R13, ++ UNW_LOONGARCH64_R14, ++ UNW_LOONGARCH64_R15, ++ UNW_LOONGARCH64_R16, ++ UNW_LOONGARCH64_R17, ++ UNW_LOONGARCH64_R18, ++ UNW_LOONGARCH64_R19, ++ UNW_LOONGARCH64_R20, ++ UNW_LOONGARCH64_R21, ++ UNW_LOONGARCH64_R22, ++ UNW_LOONGARCH64_R23, ++ UNW_LOONGARCH64_R24, ++ UNW_LOONGARCH64_R25, ++ UNW_LOONGARCH64_R26, ++ UNW_LOONGARCH64_R27, ++ UNW_LOONGARCH64_R28, ++ UNW_LOONGARCH64_R29, ++ UNW_LOONGARCH64_R30, ++ UNW_LOONGARCH64_R31, ++ ++ UNW_LOONGARCH64_PC = 32, ++ ++ /* FIXME: Other registers! */ ++ ++ /* For LoongArch64, the CFA is the value of SP (r3) at the call site in the ++ previous frame. */ ++ UNW_LOONGARCH64_CFA, ++ ++ UNW_TDEP_LAST_REG = UNW_LOONGARCH64_PC, ++ ++ UNW_TDEP_IP = UNW_LOONGARCH64_R1, ++ UNW_TDEP_SP = UNW_LOONGARCH64_R3, ++ UNW_TDEP_EH = UNW_LOONGARCH64_R0 /* FIXME. */ ++ } ++loongarch64_regnum_t; ++ ++#define UNW_TDEP_NUM_EH_REGS 4 ++ ++typedef struct unw_tdep_save_loc ++ { ++ /* Additional target-dependent info on a save location. */ ++ char unused; ++ } ++unw_tdep_save_loc_t; ++ ++/* On LoongArch64, we can directly use ucontext_t as the unwind context. */ ++typedef ucontext_t unw_tdep_context_t; ++ ++typedef struct ++ { ++ /* no loongarch64-specific auxiliary proc-info */ ++ char unused; ++ } ++unw_tdep_proc_info_t; ++ ++#include "libunwind-dynamic.h" ++#include "libunwind-common.h" ++ ++#define unw_tdep_getcontext UNW_ARCH_OBJ(getcontext) ++extern int unw_tdep_getcontext (ucontext_t *uc); ++ ++#define unw_tdep_is_fpreg UNW_ARCH_OBJ(is_fpreg) ++extern int unw_tdep_is_fpreg (int); ++ ++#if defined(__cplusplus) || defined(c_plusplus) ++} ++#endif ++ ++#endif /* LIBUNWIND_H */ +diff --git a/include/libunwind.h.in b/include/libunwind.h.in +index ec31b35..396a39d 100644 +--- a/include/libunwind.h.in ++++ b/include/libunwind.h.in +@@ -25,6 +25,8 @@ + # include "libunwind-tilegx.h" + #elif defined __s390x__ + # include "libunwind-s390x.h" ++#elif defined __loongarch64 ++# include "libunwind-loongarch64.h" + #else + # error "Unsupported arch" + #endif +diff --git a/include/tdep-loongarch64/dwarf-config.h b/include/tdep-loongarch64/dwarf-config.h +new file mode 100644 +index 0000000..9c49b0f +--- /dev/null ++++ b/include/tdep-loongarch64/dwarf-config.h +@@ -0,0 +1,59 @@ ++/* libunwind - a platform-independent unwind library ++ Copyright (C) 2008 CodeSourcery ++ Copyright (C) 2012 Tommi Rantala ++ Copyright (C) 2021 Loongson Technology Corporation Limited ++ ++This file is part of libunwind. ++ ++Permission is hereby granted, free of charge, to any person obtaining ++a copy of this software and associated documentation files (the ++"Software"), to deal in the Software without restriction, including ++without limitation the rights to use, copy, modify, merge, publish, ++distribute, sublicense, and/or sell copies of the Software, and to ++permit persons to whom the Software is furnished to do so, subject to ++the following conditions: ++ ++The above copyright notice and this permission notice shall be ++included in all copies or substantial portions of the Software. ++ ++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, ++EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF ++MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND ++NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE ++LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION ++OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION ++WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ ++ ++#ifndef dwarf_config_h ++#define dwarf_config_h ++ ++/* This is FIRST_PSEUDO_REGISTER in GCC, since DWARF_FRAME_REGISTERS is not ++ explicitly defined. ++ Number of hardware registers. We have: ++ - 32 integer registers ++ - 32 floating point registers ++ - 8 condition code registers ++ - 2 fake registers: ++ - ARG_POINTER_REGNUM ++ - FRAME_POINTER_REGNUM */ ++#define DWARF_NUM_PRESERVED_REGS 74 ++ ++#define dwarf_to_unw_regnum(reg) (((reg) < 32) ? (reg) : 0) ++ ++/* Not big-endian. */ ++#define dwarf_is_big_endian(addr_space) 0 ++ ++/* Convert a pointer to a dwarf_cursor structure to a pointer to ++ unw_cursor_t. */ ++#define dwarf_to_cursor(c) ((unw_cursor_t *) (c)) ++ ++typedef struct dwarf_loc ++ { ++ unw_word_t val; ++#ifndef UNW_LOCAL_ONLY ++ unw_word_t type; /* see DWARF_LOC_TYPE_* macros. */ ++#endif ++ } ++dwarf_loc_t; ++ ++#endif /* dwarf_config_h */ +diff --git a/include/tdep-loongarch64/jmpbuf.h b/include/tdep-loongarch64/jmpbuf.h +new file mode 100644 +index 0000000..e36b40a +--- /dev/null ++++ b/include/tdep-loongarch64/jmpbuf.h +@@ -0,0 +1,34 @@ ++/* libunwind - a platform-independent unwind library ++ Copyright (C) 2008 CodeSourcery ++ Copyright (C) 2021 Loongson Technology Corporation Limited ++ ++This file is part of libunwind. ++ ++Permission is hereby granted, free of charge, to any person obtaining ++a copy of this software and associated documentation files (the ++"Software"), to deal in the Software without restriction, including ++without limitation the rights to use, copy, modify, merge, publish, ++distribute, sublicense, and/or sell copies of the Software, and to ++permit persons to whom the Software is furnished to do so, subject to ++the following conditions: ++ ++The above copyright notice and this permission notice shall be ++included in all copies or substantial portions of the Software. ++ ++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, ++EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF ++MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND ++NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE ++LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION ++OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION ++WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ ++ ++/* Use glibc's jump-buffer indices; NPTL peeks at SP: */ ++ ++/* https://github.com/loongson/glibc/blob/loongarch_2_33/sysdeps/loongarch/setjmp.S ++ https://github.com/loongson/glibc/blob/loongarch_2_33/sysdeps/unix/sysv/linux/loongarch/lp64/jmp_buf-macros.h */ ++ ++#define JB_SP 1 ++#define JB_RP 0 ++#define JB_MASK_SAVED (168>>3) ++#define JB_MASK (176>>3) +diff --git a/include/tdep-loongarch64/libunwind_i.h b/include/tdep-loongarch64/libunwind_i.h +new file mode 100644 +index 0000000..9f5c277 +--- /dev/null ++++ b/include/tdep-loongarch64/libunwind_i.h +@@ -0,0 +1,251 @@ ++/* libunwind - a platform-independent unwind library ++ Copyright (C) 2008 CodeSourcery ++ Copyright (C) 2021 Loongson Technology Corporation Limited ++ ++This file is part of libunwind. ++ ++Permission is hereby granted, free of charge, to any person obtaining ++a copy of this software and associated documentation files (the ++"Software"), to deal in the Software without restriction, including ++without limitation the rights to use, copy, modify, merge, publish, ++distribute, sublicense, and/or sell copies of the Software, and to ++permit persons to whom the Software is furnished to do so, subject to ++the following conditions: ++ ++The above copyright notice and this permission notice shall be ++included in all copies or substantial portions of the Software. ++ ++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, ++EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF ++MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND ++NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE ++LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION ++OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION ++WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ ++ ++#ifndef LOONGARCH64_LIBUNWIND_I_H ++#define LOONGARCH64_LIBUNWIND_I_H ++ ++/* Target-dependent definitions that are internal to libunwind but need ++ to be shared with target-independent code. */ ++ ++#include ++#include ++#include "elf64.h" ++#include "mempool.h" ++#include "dwarf.h" ++#include ++ ++typedef struct ++ { ++ /* no loongarch64-specific fast trace */ ++ } ++unw_tdep_frame_t; ++ ++struct unw_addr_space ++ { ++ struct unw_accessors acc; ++ ++ unw_caching_policy_t caching_policy; ++ _Atomic uint32_t cache_generation; ++ unw_word_t dyn_generation; /* see dyn-common.h */ ++ unw_word_t dyn_info_list_addr; /* (cached) dyn_info_list_addr */ ++ struct dwarf_rs_cache global_cache; ++ struct unw_debug_frame_list *debug_frames; ++}; ++ ++/* LoongArch64 supports only little-endian. */ ++#define tdep_big_endian(as) 0 ++ ++struct cursor ++ { ++ struct dwarf_cursor dwarf; /* must be first */ ++ ++ enum ++ { ++ LOONGARCH64_SCF_NONE, ++ LOONGARCH64_SCF_LINUX_RT_SIGFRAME, ++ } ++ sigcontext_format; ++ unw_word_t sigcontext_addr; ++ unw_word_t sigcontext_sp; ++ unw_word_t sigcontext_pc; ++ int validate; ++ ucontext_t *uc; ++ }; ++ ++static inline ucontext_t * ++dwarf_get_uc(const struct dwarf_cursor *cursor) ++{ ++ const struct cursor *c = (struct cursor *) cursor->as_arg; ++ return c->uc; ++} ++ ++#define DWARF_GET_LOC(l) ((l).val) ++ ++#ifdef UNW_LOCAL_ONLY ++# define DWARF_NULL_LOC DWARF_LOC (0, 0) ++# define DWARF_IS_NULL_LOC(l) (DWARF_GET_LOC (l) == 0) ++# define DWARF_LOC(r, t) ((dwarf_loc_t) { .val = (r) }) ++# define DWARF_IS_REG_LOC(l) 0 ++# define DWARF_REG_LOC(c,r) (DWARF_LOC((unw_word_t) (intptr_t) \ ++ tdep_uc_addr(dwarf_get_uc(c), (r)), 0)) ++# define DWARF_MEM_LOC(c,m) DWARF_LOC ((m), 0) ++# define DWARF_FPREG_LOC(c,r) (DWARF_LOC((unw_word_t) (intptr_t) \ ++ tdep_uc_addr(dwarf_get_uc(c), (r)), 0)) ++ ++/* FIXME: Implement these for the LoongArch64 FPU. */ ++static inline int ++dwarf_getfp (struct dwarf_cursor *c, dwarf_loc_t loc, unw_fpreg_t *val) ++{ ++ return 0; ++} ++ ++static inline int ++dwarf_putfp (struct dwarf_cursor *c, dwarf_loc_t loc, unw_fpreg_t val) ++{ ++ return 0; ++} ++ ++static inline int ++dwarf_get (struct dwarf_cursor *c, dwarf_loc_t loc, unw_word_t *val) ++{ ++ if (!DWARF_GET_LOC (loc)) ++ return -1; ++ *val = *(unw_word_t *) (intptr_t) DWARF_GET_LOC (loc); ++ return 0; ++} ++ ++static inline int ++dwarf_put (struct dwarf_cursor *c, dwarf_loc_t loc, unw_word_t val) ++{ ++ if (!DWARF_GET_LOC (loc)) ++ return -1; ++ *(unw_word_t *) (intptr_t) DWARF_GET_LOC (loc) = val; ++ return 0; ++} ++ ++#else /* !UNW_LOCAL_ONLY */ ++# define DWARF_LOC_TYPE_FP (1 << 0) ++# define DWARF_LOC_TYPE_REG (1 << 1) ++# define DWARF_NULL_LOC DWARF_LOC (0, 0) ++# define DWARF_IS_NULL_LOC(l) \ ++ ({ dwarf_loc_t _l = (l); _l.val == 0 && _l.type == 0; }) ++# define DWARF_LOC(r, t) ((dwarf_loc_t) { .val = (r), .type = (t) }) ++# define DWARF_IS_REG_LOC(l) (((l).type & DWARF_LOC_TYPE_REG) != 0) ++# define DWARF_IS_FP_LOC(l) (((l).type & DWARF_LOC_TYPE_FP) != 0) ++# define DWARF_REG_LOC(c,r) DWARF_LOC((r), DWARF_LOC_TYPE_REG) ++# define DWARF_MEM_LOC(c,m) DWARF_LOC ((m), 0) ++# define DWARF_FPREG_LOC(c,r) DWARF_LOC((r), (DWARF_LOC_TYPE_REG \ ++ | DWARF_LOC_TYPE_FP)) ++ ++/* FIXME: Implement these for the LoongArch64 FPU. */ ++static inline int ++dwarf_getfp (struct dwarf_cursor *c, dwarf_loc_t loc, unw_fpreg_t *val) ++{ ++ return 0; ++} ++ ++static inline int ++dwarf_putfp (struct dwarf_cursor *c, dwarf_loc_t loc, unw_fpreg_t val) ++{ ++ return 0; ++} ++ ++static inline int ++dwarf_get (struct dwarf_cursor *c, dwarf_loc_t loc, unw_word_t *val) ++{ ++ if (DWARF_IS_NULL_LOC (loc)) ++ return -UNW_EBADREG; ++ ++ /* If a code-generator were to save a value of type unw_word_t in a ++ * floating-point register, we would have to support this case. I ++ * suppose it could happen with MMX registers, but does it really ++ * happen? */ ++ assert (!DWARF_IS_FP_LOC (loc)); ++ ++ if (DWARF_IS_REG_LOC (loc)) ++ return (*c->as->acc.access_reg) (c->as, DWARF_GET_LOC (loc), val, ++ 0, c->as_arg); ++ else ++ return (*c->as->acc.access_mem) (c->as, DWARF_GET_LOC (loc), val, ++ 0, c->as_arg); ++} ++ ++static inline int ++dwarf_put (struct dwarf_cursor *c, dwarf_loc_t loc, unw_word_t val) ++{ ++ if (DWARF_IS_NULL_LOC (loc)) ++ return -UNW_EBADREG; ++ ++ /* If a code-generator were to save a value of type unw_word_t in a ++ * floating-point register, we would have to support this case. I ++ * suppose it could happen with MMX registers, but does it really ++ * happen? */ ++ assert (!DWARF_IS_FP_LOC (loc)); ++ ++ if (DWARF_IS_REG_LOC (loc)) ++ return (*c->as->acc.access_reg) (c->as, DWARF_GET_LOC (loc), &val, ++ 1, c->as_arg); ++ else ++ return (*c->as->acc.access_mem) (c->as, DWARF_GET_LOC (loc), &val, ++ 1, c->as_arg); ++} ++ ++#endif /* !UNW_LOCAL_ONLY */ ++ ++#define tdep_getcontext_trace unw_getcontext ++#define tdep_init_done UNW_OBJ(init_done) ++#define tdep_init UNW_OBJ(init) ++/* Platforms that support UNW_INFO_FORMAT_TABLE need to define ++ tdep_search_unwind_table. */ ++#define tdep_search_unwind_table dwarf_search_unwind_table ++#define tdep_find_unwind_table dwarf_find_unwind_table ++#define tdep_uc_addr UNW_ARCH_OBJ(uc_addr) ++#define tdep_get_elf_image UNW_ARCH_OBJ(get_elf_image) ++#define tdep_get_exe_image_path UNW_ARCH_OBJ(get_exe_image_path) ++#define tdep_access_reg UNW_OBJ(access_reg) ++#define tdep_access_fpreg UNW_OBJ(access_fpreg) ++#define tdep_fetch_frame(c,ip,n) do {} while(0) ++#define tdep_cache_frame(c) 0 ++#define tdep_reuse_frame(c,rs) do {} while(0) ++#define tdep_stash_frame(c,rs) do {} while(0) ++#define tdep_trace(cur,addr,n) (-UNW_ENOINFO) ++ ++#ifdef UNW_LOCAL_ONLY ++# define tdep_find_proc_info(c,ip,n) \ ++ dwarf_find_proc_info((c)->as, (ip), &(c)->pi, (n), \ ++ (c)->as_arg) ++# define tdep_put_unwind_info(as,pi,arg) \ ++ dwarf_put_unwind_info((as), (pi), (arg)) ++#else ++# define tdep_find_proc_info(c,ip,n) \ ++ (*(c)->as->acc.find_proc_info)((c)->as, (ip), &(c)->pi, (n), \ ++ (c)->as_arg) ++# define tdep_put_unwind_info(as,pi,arg) \ ++ (*(as)->acc.put_unwind_info)((as), (pi), (arg)) ++#endif ++ ++#define tdep_get_as(c) ((c)->dwarf.as) ++#define tdep_get_as_arg(c) ((c)->dwarf.as_arg) ++#define tdep_get_ip(c) ((c)->dwarf.ip) ++ ++extern atomic_bool tdep_init_done; ++#define tdep_init_mem_validate UNW_OBJ(init_mem_validate) ++ ++extern void tdep_init (void); ++extern void tdep_init_mem_validate (void); ++extern int tdep_search_unwind_table (unw_addr_space_t as, unw_word_t ip, ++ unw_dyn_info_t *di, unw_proc_info_t *pi, ++ int need_unwind_info, void *arg); ++extern void *tdep_uc_addr (ucontext_t *uc, int reg); ++extern int tdep_get_elf_image (struct elf_image *ei, pid_t pid, unw_word_t ip, ++ unsigned long *segbase, unsigned long *mapoff, ++ char *path, size_t pathlen); ++extern void tdep_get_exe_image_path (char *path); ++extern int tdep_access_reg (struct cursor *c, unw_regnum_t reg, ++ unw_word_t *valp, int write); ++extern int tdep_access_fpreg (struct cursor *c, unw_regnum_t reg, ++ unw_fpreg_t *valp, int write); ++ ++#endif /* LOONGARCH64_LIBUNWIND_I_H */ +diff --git a/include/tdep/dwarf-config.h b/include/tdep/dwarf-config.h +index c759a46..fbb716c 100644 +--- a/include/tdep/dwarf-config.h ++++ b/include/tdep/dwarf-config.h +@@ -23,6 +23,8 @@ + # include "tdep-x86_64/dwarf-config.h" + #elif defined __tilegx__ + # include "tdep-tilegx/dwarf-config.h" ++#elif defined __loongarch64 ++# include "tdep-loongarch64/dwarf-config.h" + #else + # error "Unsupported arch" + #endif +diff --git a/include/tdep/jmpbuf.h b/include/tdep/jmpbuf.h +index 13093a0..720641c 100644 +--- a/include/tdep/jmpbuf.h ++++ b/include/tdep/jmpbuf.h +@@ -23,6 +23,8 @@ + # include "tdep-x86_64/jmpbuf.h" + #elif defined __tilegx__ + # include "tdep-tilegx/jmpbuf.h" ++#elif defined __loongarch64 ++# include "tdep-loongarch64/jmpbuf.h" + #else + # error "Unsupported arch" + #endif +diff --git a/include/tdep/libunwind_i.h b/include/tdep/libunwind_i.h +index 19cdc15..b42345d 100644 +--- a/include/tdep/libunwind_i.h ++++ b/include/tdep/libunwind_i.h +@@ -27,6 +27,8 @@ + # include "tdep-tilegx/libunwind_i.h" + #elif defined __s390x__ + # include "tdep-s390x/libunwind_i.h" ++#elif defined __loongarch64 ++# include "tdep-loongarch64/libunwind_i.h" + #else + # error "Unsupported arch" + #endif +diff --git a/include/tdep/libunwind_i.h.in b/include/tdep/libunwind_i.h.in +index c472996..7f5ae1d 100644 +--- a/include/tdep/libunwind_i.h.in ++++ b/include/tdep/libunwind_i.h.in +@@ -27,6 +27,8 @@ + # include "tdep-tilegx/libunwind_i.h" + #elif defined __s390x__ + # include "tdep-s390x/libunwind_i.h" ++#elif defined __loongarch64 ++# include "tdep-loongarch64/libunwind_i.h" + #else + # error "Unsupported arch" + #endif +diff --git a/src/Makefile.am b/src/Makefile.am +index 8d72ef0..948db0c 100644 +--- a/src/Makefile.am ++++ b/src/Makefile.am +@@ -334,6 +334,30 @@ libunwind_tilegx_la_SOURCES_tilegx = $(libunwind_la_SOURCES_tilegx_common) \ + tilegx/Gglobal.c tilegx/Ginit.c tilegx/Ginit_local.c tilegx/Ginit_remote.c \ + tilegx/Gis_signal_frame.c tilegx/Gregs.c tilegx/Gresume.c tilegx/Gstep.c + ++# The list of files that go info libunwind and libunwind-loongarch64: ++noinst_HEADERS += loongarch64/init.h loongarch64/offsets.h loongarch64/unwind_i.h ++libunwind_la_SOURCES_loongarch64_common = $(libunwind_la_SOURCES_common) \ ++ loongarch64/is_fpreg.c loongarch64/regname.c ++ ++# The list of files that go into libunwind: ++libunwind_la_SOURCES_loongarch64 = $(libunwind_la_SOURCES_loongarch64_common) \ ++ $(libunwind_la_SOURCES_local) \ ++ loongarch64/getcontext.S \ ++ loongarch64/Lapply_reg_state.c loongarch64/Lreg_states_iterate.c \ ++ loongarch64/Lcreate_addr_space.c loongarch64/Lget_proc_info.c \ ++ loongarch64/Lget_save_loc.c loongarch64/Lglobal.c loongarch64/Linit.c \ ++ loongarch64/Linit_local.c loongarch64/Linit_remote.c \ ++ loongarch64/Lis_signal_frame.c loongarch64/Lregs.c \ ++ loongarch64/Lresume.c loongarch64/Lstep.c ++ ++libunwind_loongarch64_la_SOURCES_loongarch64 = $(libunwind_la_SOURCES_loongarch64_common) \ ++ $(libunwind_la_SOURCES_generic) \ ++ loongarch64/Gapply_reg_state.c loongarch64/Greg_states_iterate.c \ ++ loongarch64/Gcreate_addr_space.c loongarch64/Gget_proc_info.c \ ++ loongarch64/Gget_save_loc.c loongarch64/Gglobal.c loongarch64/Ginit.c \ ++ loongarch64/Ginit_local.c loongarch64/Ginit_remote.c \ ++ loongarch64/Gis_signal_frame.c loongarch64/Gregs.c \ ++ loongarch64/Gresume.c loongarch64/Gstep.c + + # The list of files that go both into libunwind and libunwind-x86: + noinst_HEADERS += x86/init.h x86/offsets.h x86/unwind_i.h +@@ -627,6 +651,18 @@ if !REMOTE_ONLY + endif + libunwind_setjmp_la_SOURCES += tilegx/siglongjmp.S + else ++if ARCH_LOONGARCH64 ++ lib_LTLIBRARIES += libunwind-loongarch64.la ++ libunwind_la_SOURCES = $(libunwind_la_SOURCES_loongarch64) ++ libunwind_loongarch64_la_SOURCES = $(libunwind_loongarch64_la_SOURCES_loongarch64) ++ libunwind_loongarch64_la_LDFLAGS = $(COMMON_SO_LDFLAGS) -version-info $(SOVERSION) ++ libunwind_loongarch64_la_LIBADD = libunwind-dwarf-generic.la ++ libunwind_loongarch64_la_LIBADD += libunwind-elf64.la ++if !REMOTE_ONLY ++ libunwind_loongarch64_la_LIBADD += libunwind.la -lc ++endif ++ libunwind_setjmp_la_SOURCES += loongarch64/siglongjmp.S ++else + if ARCH_X86 + lib_LTLIBRARIES += libunwind-x86.la + libunwind_la_SOURCES = $(libunwind_la_SOURCES_x86) $(libunwind_x86_la_SOURCES_os) +@@ -704,6 +740,7 @@ endif # ARCH_PPC64 + endif # ARCH_PPC32 + endif # ARCH_X86_64 + endif # ARCH_X86 ++endif # ARCH_LOONGARCH64 + endif # ARCH_TILEGX + endif # ARCH_MIPS + endif # ARCH_HPPA +diff --git a/src/coredump/_UCD_access_reg_linux.c b/src/coredump/_UCD_access_reg_linux.c +index 43792f8..490ad2a 100644 +--- a/src/coredump/_UCD_access_reg_linux.c ++++ b/src/coredump/_UCD_access_reg_linux.c +@@ -122,6 +122,43 @@ _UCD_access_reg (unw_addr_space_t as, + [UNW_X86_64_RSP] = offsetof(struct user_regs_struct, rsp) / sizeof(long), + [UNW_X86_64_RIP] = offsetof(struct user_regs_struct, rip) / sizeof(long), + }; ++#elif defined(UNW_TARGET_LOONGARCH64) ++# include ++ ++ static const uint8_t remap_regs[] = ++ { ++ [UNW_LOONGARCH64_R0] = LOONGARCH_EF_R0, ++ [UNW_LOONGARCH64_R1] = LOONGARCH_EF_R1, ++ [UNW_LOONGARCH64_R2] = LOONGARCH_EF_R2, ++ [UNW_LOONGARCH64_R3] = LOONGARCH_EF_R3, ++ [UNW_LOONGARCH64_R4] = LOONGARCH_EF_R4, ++ [UNW_LOONGARCH64_R5] = LOONGARCH_EF_R5, ++ [UNW_LOONGARCH64_R6] = LOONGARCH_EF_R6, ++ [UNW_LOONGARCH64_R7] = LOONGARCH_EF_R7, ++ [UNW_LOONGARCH64_R8] = LOONGARCH_EF_R8, ++ [UNW_LOONGARCH64_R9] = LOONGARCH_EF_R9, ++ [UNW_LOONGARCH64_R10] = LOONGARCH_EF_R10, ++ [UNW_LOONGARCH64_R11] = LOONGARCH_EF_R11, ++ [UNW_LOONGARCH64_R12] = LOONGARCH_EF_R12, ++ [UNW_LOONGARCH64_R13] = LOONGARCH_EF_R13, ++ [UNW_LOONGARCH64_R14] = LOONGARCH_EF_R14, ++ [UNW_LOONGARCH64_R15] = LOONGARCH_EF_R15, ++ [UNW_LOONGARCH64_R16] = LOONGARCH_EF_R16, ++ [UNW_LOONGARCH64_R17] = LOONGARCH_EF_R17, ++ [UNW_LOONGARCH64_R18] = LOONGARCH_EF_R18, ++ [UNW_LOONGARCH64_R19] = LOONGARCH_EF_R19, ++ [UNW_LOONGARCH64_R20] = LOONGARCH_EF_R20, ++ [UNW_LOONGARCH64_R21] = LOONGARCH_EF_R21, ++ [UNW_LOONGARCH64_R22] = LOONGARCH_EF_R22, ++ [UNW_LOONGARCH64_R23] = LOONGARCH_EF_R23, ++ [UNW_LOONGARCH64_R24] = LOONGARCH_EF_R24, ++ [UNW_LOONGARCH64_R25] = LOONGARCH_EF_R25, ++ [UNW_LOONGARCH64_R28] = LOONGARCH_EF_R28, ++ [UNW_LOONGARCH64_R29] = LOONGARCH_EF_R29, ++ [UNW_LOONGARCH64_R30] = LOONGARCH_EF_R30, ++ [UNW_LOONGARCH64_R31] = LOONGARCH_EF_R31, ++ [UNW_LOONGARCH64_PC] = LOONGARCH_EF_CSR_ERA, ++ }; + #else + #error Port me + #endif +diff --git a/src/loongarch64/Gapply_reg_state.c b/src/loongarch64/Gapply_reg_state.c +new file mode 100644 +index 0000000..82f056d +--- /dev/null ++++ b/src/loongarch64/Gapply_reg_state.c +@@ -0,0 +1,37 @@ ++/* libunwind - a platform-independent unwind library ++ Copyright (c) 2002-2003 Hewlett-Packard Development Company, L.P. ++ Contributed by David Mosberger-Tang ++ ++ Modified for x86_64 by Max Asbock ++ ++This file is part of libunwind. ++ ++Permission is hereby granted, free of charge, to any person obtaining ++a copy of this software and associated documentation files (the ++"Software"), to deal in the Software without restriction, including ++without limitation the rights to use, copy, modify, merge, publish, ++distribute, sublicense, and/or sell copies of the Software, and to ++permit persons to whom the Software is furnished to do so, subject to ++the following conditions: ++ ++The above copyright notice and this permission notice shall be ++included in all copies or substantial portions of the Software. ++ ++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, ++EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF ++MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND ++NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE ++LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION ++OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION ++WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ ++ ++#include "unwind_i.h" ++ ++int ++unw_apply_reg_state (unw_cursor_t *cursor, ++ void *reg_states_data) ++{ ++ struct cursor *c = (struct cursor *) cursor; ++ ++ return dwarf_apply_reg_state (&c->dwarf, (dwarf_reg_state_t *)reg_states_data); ++} +diff --git a/src/loongarch64/Gcreate_addr_space.c b/src/loongarch64/Gcreate_addr_space.c +new file mode 100644 +index 0000000..f441e0a +--- /dev/null ++++ b/src/loongarch64/Gcreate_addr_space.c +@@ -0,0 +1,52 @@ ++/* libunwind - a platform-independent unwind library ++ Copyright (C) 2008 CodeSourcery ++ Copyright (C) 2021 Loongson Technology Corporation Limited ++ ++This file is part of libunwind. ++ ++Permission is hereby granted, free of charge, to any person obtaining ++a copy of this software and associated documentation files (the ++"Software"), to deal in the Software without restriction, including ++without limitation the rights to use, copy, modify, merge, publish, ++distribute, sublicense, and/or sell copies of the Software, and to ++permit persons to whom the Software is furnished to do so, subject to ++the following conditions: ++ ++The above copyright notice and this permission notice shall be ++included in all copies or substantial portions of the Software. ++ ++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, ++EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF ++MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND ++NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE ++LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION ++OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION ++WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ ++ ++#include ++ ++#include "unwind_i.h" ++ ++unw_addr_space_t ++unw_create_addr_space (unw_accessors_t *a, int byte_order) ++{ ++#ifdef UNW_LOCAL_ONLY ++ return NULL; ++#else ++ unw_addr_space_t as; ++ ++ /* LoongArch64 supports only little-endian. */ ++ if (byte_order != 0 && byte_order != __LITTLE_ENDIAN) ++ return NULL; ++ ++ as = malloc (sizeof (*as)); ++ if (!as) ++ return NULL; ++ ++ memset (as, 0, sizeof (*as)); ++ ++ as->acc = *a; ++ ++ return as; ++#endif ++} +diff --git a/src/loongarch64/Gget_proc_info.c b/src/loongarch64/Gget_proc_info.c +new file mode 100644 +index 0000000..04c4326 +--- /dev/null ++++ b/src/loongarch64/Gget_proc_info.c +@@ -0,0 +1,44 @@ ++/* libunwind - a platform-independent unwind library ++ Copyright (C) 2008 CodeSourcery ++ ++This file is part of libunwind. ++ ++Permission is hereby granted, free of charge, to any person obtaining ++a copy of this software and associated documentation files (the ++"Software"), to deal in the Software without restriction, including ++without limitation the rights to use, copy, modify, merge, publish, ++distribute, sublicense, and/or sell copies of the Software, and to ++permit persons to whom the Software is furnished to do so, subject to ++the following conditions: ++ ++The above copyright notice and this permission notice shall be ++included in all copies or substantial portions of the Software. ++ ++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, ++EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF ++MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND ++NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE ++LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION ++OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION ++WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ ++ ++#include "unwind_i.h" ++ ++int ++unw_get_proc_info (unw_cursor_t *cursor, unw_proc_info_t *pi) ++{ ++ struct cursor *c = (struct cursor *) cursor; ++ int ret; ++ ++ ret = dwarf_make_proc_info (&c->dwarf); ++ if (ret < 0) { ++ /* Construct a dummy proc info if Dwarf failed */ ++ memset (pi, 0, sizeof (*pi)); ++ pi->start_ip = c->dwarf.ip; ++ pi->end_ip = c->dwarf.ip + 4; ++ return 0; ++ } ++ ++ *pi = c->dwarf.pi; ++ return 0; ++} +diff --git a/src/loongarch64/Gget_save_loc.c b/src/loongarch64/Gget_save_loc.c +new file mode 100644 +index 0000000..edc7657 +--- /dev/null ++++ b/src/loongarch64/Gget_save_loc.c +@@ -0,0 +1,101 @@ ++/* libunwind - a platform-independent unwind library ++ Copyright (C) 2008 CodeSourcery ++ Copyright (C) 2021 Loongson Technology Corporation Limited ++ ++This file is part of libunwind. ++ ++Permission is hereby granted, free of charge, to any person obtaining ++a copy of this software and associated documentation files (the ++"Software"), to deal in the Software without restriction, including ++without limitation the rights to use, copy, modify, merge, publish, ++distribute, sublicense, and/or sell copies of the Software, and to ++permit persons to whom the Software is furnished to do so, subject to ++the following conditions: ++ ++The above copyright notice and this permission notice shall be ++included in all copies or substantial portions of the Software. ++ ++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, ++EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF ++MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND ++NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE ++LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION ++OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION ++WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ ++ ++#include "unwind_i.h" ++ ++/* FIXME for LoongArch64. */ ++ ++int ++unw_get_save_loc (unw_cursor_t *cursor, int reg, unw_save_loc_t *sloc) ++{ ++ struct cursor *c = (struct cursor *) cursor; ++ dwarf_loc_t loc; ++ ++ loc = DWARF_NULL_LOC; /* default to "not saved" */ ++ ++ switch (reg) ++ { ++ case UNW_LOONGARCH64_R0: ++ case UNW_LOONGARCH64_R1: ++ case UNW_LOONGARCH64_R2: ++ case UNW_LOONGARCH64_R3: ++ case UNW_LOONGARCH64_R4: ++ case UNW_LOONGARCH64_R5: ++ case UNW_LOONGARCH64_R6: ++ case UNW_LOONGARCH64_R7: ++ case UNW_LOONGARCH64_R8: ++ case UNW_LOONGARCH64_R9: ++ case UNW_LOONGARCH64_R10: ++ case UNW_LOONGARCH64_R11: ++ case UNW_LOONGARCH64_R12: ++ case UNW_LOONGARCH64_R13: ++ case UNW_LOONGARCH64_R14: ++ case UNW_LOONGARCH64_R15: ++ case UNW_LOONGARCH64_R16: ++ case UNW_LOONGARCH64_R17: ++ case UNW_LOONGARCH64_R18: ++ case UNW_LOONGARCH64_R19: ++ case UNW_LOONGARCH64_R20: ++ case UNW_LOONGARCH64_R21: ++ case UNW_LOONGARCH64_R22: ++ case UNW_LOONGARCH64_R23: ++ case UNW_LOONGARCH64_R24: ++ case UNW_LOONGARCH64_R25: ++ case UNW_LOONGARCH64_R26: ++ case UNW_LOONGARCH64_R27: ++ case UNW_LOONGARCH64_R28: ++ case UNW_LOONGARCH64_R29: ++ case UNW_LOONGARCH64_R30: ++ case UNW_LOONGARCH64_R31: ++ case UNW_LOONGARCH64_PC: ++ loc = c->dwarf.loc[reg - UNW_LOONGARCH64_R0]; ++ break; ++ ++ default: ++ break; ++ } ++ ++ memset (sloc, 0, sizeof (*sloc)); ++ ++ if (DWARF_IS_NULL_LOC (loc)) ++ { ++ sloc->type = UNW_SLT_NONE; ++ return 0; ++ } ++ ++#if !defined(UNW_LOCAL_ONLY) ++ if (DWARF_IS_REG_LOC (loc)) ++ { ++ sloc->type = UNW_SLT_REG; ++ sloc->u.regnum = DWARF_GET_LOC (loc); ++ } ++ else ++#endif ++ { ++ sloc->type = UNW_SLT_MEMORY; ++ sloc->u.addr = DWARF_GET_LOC (loc); ++ } ++ return 0; ++} +diff --git a/src/loongarch64/Gglobal.c b/src/loongarch64/Gglobal.c +new file mode 100644 +index 0000000..e770e09 +--- /dev/null ++++ b/src/loongarch64/Gglobal.c +@@ -0,0 +1,58 @@ ++/* libunwind - a platform-independent unwind library ++ Copyright (C) 2008 CodeSourcery ++ Copyright (C) 2021 Loongson Technology Corporation Limited ++ ++This file is part of libunwind. ++ ++Permission is hereby granted, free of charge, to any person obtaining ++a copy of this software and associated documentation files (the ++"Software"), to deal in the Software without restriction, including ++without limitation the rights to use, copy, modify, merge, publish, ++distribute, sublicense, and/or sell copies of the Software, and to ++permit persons to whom the Software is furnished to do so, subject to ++the following conditions: ++ ++The above copyright notice and this permission notice shall be ++included in all copies or substantial portions of the Software. ++ ++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, ++EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF ++MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND ++NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE ++LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION ++OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION ++WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ ++ ++#include "unwind_i.h" ++#include "dwarf_i.h" ++ ++HIDDEN define_lock (loongarch64_lock); ++HIDDEN atomic_bool tdep_init_done; ++ ++HIDDEN void ++tdep_init (void) ++{ ++ intrmask_t saved_mask; ++ ++ sigfillset (&unwi_full_mask); ++ ++ lock_acquire (&loongarch64_lock, saved_mask); ++ { ++ if (tdep_init_done) ++ /* another thread else beat us to it... */ ++ goto out; ++ ++ mi_init (); ++ ++ dwarf_init (); ++ ++#ifndef UNW_REMOTE_ONLY ++ tdep_init_mem_validate (); ++ ++ loongarch64_local_addr_space_init (); ++#endif ++ tdep_init_done = 1; /* signal that we're initialized... */ ++ } ++ out: ++ lock_release (&loongarch64_lock, saved_mask); ++} +diff --git a/src/loongarch64/Ginit.c b/src/loongarch64/Ginit.c +new file mode 100644 +index 0000000..555e8d8 +--- /dev/null ++++ b/src/loongarch64/Ginit.c +@@ -0,0 +1,405 @@ ++/* libunwind - a platform-independent unwind library ++ Copyright (C) 2008 CodeSourcery ++ Copyright (C) 2021 Loongson Technology Corporation Limited ++ ++This file is part of libunwind. ++ ++Permission is hereby granted, free of charge, to any person obtaining ++a copy of this software and associated documentation files (the ++"Software"), to deal in the Software without restriction, including ++without limitation the rights to use, copy, modify, merge, publish, ++distribute, sublicense, and/or sell copies of the Software, and to ++permit persons to whom the Software is furnished to do so, subject to ++the following conditions: ++ ++The above copyright notice and this permission notice shall be ++included in all copies or substantial portions of the Software. ++ ++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, ++EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF ++MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND ++NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE ++LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION ++OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION ++WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ ++ ++#include ++#include ++#include ++#include ++#include ++ ++#include "unwind_i.h" ++ ++#ifdef UNW_REMOTE_ONLY ++ ++/* unw_local_addr_space is a NULL pointer in this case. */ ++unw_addr_space_t unw_local_addr_space; ++ ++#else /* !UNW_REMOTE_ONLY */ ++ ++static struct unw_addr_space local_addr_space; ++ ++unw_addr_space_t unw_local_addr_space = &local_addr_space; ++ ++static inline void * ++uc_addr (ucontext_t *uc, int reg) ++{ ++ if (reg >= UNW_LOONGARCH64_R0 && reg <= UNW_LOONGARCH64_R31) ++ return &uc->uc_mcontext.__gregs[reg - UNW_LOONGARCH64_R0]; ++ else if (reg == UNW_LOONGARCH64_PC) ++ return &uc->uc_mcontext.__pc; ++ else ++ return NULL; ++} ++ ++# ifdef UNW_LOCAL_ONLY ++ ++HIDDEN void * ++tdep_uc_addr (ucontext_t *uc, int reg) ++{ ++ return uc_addr (uc, reg); ++} ++ ++# endif /* UNW_LOCAL_ONLY */ ++ ++static void ++put_unwind_info (unw_addr_space_t as, unw_proc_info_t *proc_info, void *arg) ++{ ++ /* it's a no-op */ ++} ++ ++static int ++get_dyn_info_list_addr (unw_addr_space_t as, unw_word_t *dyn_info_list_addr, ++ void *arg) ++{ ++#ifndef UNW_LOCAL_ONLY ++# pragma weak _U_dyn_info_list_addr ++ if (!_U_dyn_info_list_addr) ++ return -UNW_ENOINFO; ++#endif ++ // Access the `_U_dyn_info_list` from `LOCAL_ONLY` library, i.e. libunwind.so. ++ *dyn_info_list_addr = _U_dyn_info_list_addr (); ++ return 0; ++} ++ ++#define PAGE_SIZE 4096 ++#define PAGE_START(a) ((a) & ~(PAGE_SIZE-1)) ++ ++static int mem_validate_pipe[2] = {-1, -1}; ++ ++#ifdef HAVE_PIPE2 ++static inline void ++do_pipe2 (int pipefd[2]) ++{ ++ pipe2 (pipefd, O_CLOEXEC | O_NONBLOCK); ++} ++#else ++static inline void ++set_pipe_flags (int fd) ++{ ++ int fd_flags = fcntl (fd, F_GETFD, 0); ++ int status_flags = fcntl (fd, F_GETFL, 0); ++ ++ fd_flags |= FD_CLOEXEC; ++ fcntl (fd, F_SETFD, fd_flags); ++ ++ status_flags |= O_NONBLOCK; ++ fcntl (fd, F_SETFL, status_flags); ++} ++ ++static inline void ++do_pipe2 (int pipefd[2]) ++{ ++ pipe (pipefd); ++ set_pipe_flags(pipefd[0]); ++ set_pipe_flags(pipefd[1]); ++} ++#endif ++ ++static inline void ++open_pipe (void) ++{ ++ if (mem_validate_pipe[0] != -1) ++ close (mem_validate_pipe[0]); ++ if (mem_validate_pipe[1] != -1) ++ close (mem_validate_pipe[1]); ++ ++ do_pipe2 (mem_validate_pipe); ++} ++ ++ALWAYS_INLINE ++static int ++write_validate (void *addr) ++{ ++ int ret = -1; ++ ssize_t bytes = 0; ++ ++ do ++ { ++ char buf; ++ bytes = read (mem_validate_pipe[0], &buf, 1); ++ } ++ while ( errno == EINTR ); ++ ++ int valid_read = (bytes > 0 || errno == EAGAIN || errno == EWOULDBLOCK); ++ if (!valid_read) ++ { ++ // re-open closed pipe ++ open_pipe (); ++ } ++ ++ do ++ { ++ ret = write (mem_validate_pipe[1], addr, 1); ++ } ++ while ( errno == EINTR ); ++ ++ return ret; ++} ++ ++static int (*mem_validate_func) (void *addr, size_t len); ++static int msync_validate (void *addr, size_t len) ++{ ++ if (msync (addr, len, MS_ASYNC) != 0) ++ { ++ return -1; ++ } ++ ++ return write_validate (addr); ++} ++ ++#ifdef HAVE_MINCORE ++static int mincore_validate (void *addr, size_t len) ++{ ++ unsigned char mvec[2]; /* Unaligned access may cross page boundary */ ++ ++ /* mincore could fail with EAGAIN but we conservatively return -1 ++ instead of looping. */ ++ if (mincore (addr, len, (unsigned char *)mvec) != 0) ++ { ++ return -1; ++ } ++ ++ return write_validate (addr); ++} ++#endif ++ ++/* Initialise memory validation method. On linux kernels <2.6.21, ++ mincore() returns incorrect value for MAP_PRIVATE mappings, ++ such as stacks. If mincore() was available at compile time, ++ check if we can actually use it. If not, use msync() instead. */ ++HIDDEN void ++tdep_init_mem_validate (void) ++{ ++ open_pipe (); ++ ++#ifdef HAVE_MINCORE ++ unsigned char present = 1; ++ unw_word_t addr = PAGE_START((unw_word_t)&present); ++ unsigned char mvec[1]; ++ int ret; ++ while ((ret = mincore ((void*)addr, PAGE_SIZE, (unsigned char *)mvec)) == -1 && ++ errno == EAGAIN) {} ++ if (ret == 0) ++ { ++ Debug(1, "using mincore to validate memory\n"); ++ mem_validate_func = mincore_validate; ++ } ++ else ++#endif ++ { ++ Debug(1, "using msync to validate memory\n"); ++ mem_validate_func = msync_validate; ++ } ++} ++ ++/* Cache of already validated addresses */ ++#define NLGA 4 ++#if defined(HAVE___CACHE_PER_THREAD) && HAVE___CACHE_PER_THREAD ++// thread-local variant ++static _Thread_local unw_word_t last_good_addr[NLGA]; ++static _Thread_local int lga_victim; ++ ++static int ++is_cached_valid_mem(unw_word_t addr) ++{ ++ int i; ++ for (i = 0; i < NLGA; i++) ++ { ++ if (addr == last_good_addr[i]) ++ return 1; ++ } ++ return 0; ++} ++ ++static void ++cache_valid_mem(unw_word_t addr) ++{ ++ int i, victim; ++ victim = lga_victim; ++ for (i = 0; i < NLGA; i++) { ++ if (last_good_addr[victim] == 0) { ++ last_good_addr[victim] = addr; ++ return; ++ } ++ victim = (victim + 1) % NLGA; ++ } ++ ++ /* All slots full. Evict the victim. */ ++ last_good_addr[victim] = addr; ++ victim = (victim + 1) % NLGA; ++ lga_victim = victim; ++} ++ ++#else ++// global, thread safe variant ++static _Atomic unw_word_t last_good_addr[NLGA]; ++static _Atomic int lga_victim; ++ ++static int ++is_cached_valid_mem(unw_word_t addr) ++{ ++ int i; ++ for (i = 0; i < NLGA; i++) ++ { ++ if (addr == atomic_load(&last_good_addr[i])) ++ return 1; ++ } ++ return 0; ++} ++ ++static void ++cache_valid_mem(unw_word_t addr) ++{ ++ int i, victim; ++ victim = atomic_load(&lga_victim); ++ unw_word_t zero = 0; ++ for (i = 0; i < NLGA; i++) { ++ if (atomic_compare_exchange_strong(&last_good_addr[victim], &zero, addr)) { ++ return; ++ } ++ victim = (victim + 1) % NLGA; ++ } ++ ++ /* All slots full. Evict the victim. */ ++ atomic_store(&last_good_addr[victim], addr); ++ victim = (victim + 1) % NLGA; ++ atomic_store(&lga_victim, victim); ++} ++#endif ++ ++static int ++validate_mem (unw_word_t addr) ++{ ++ size_t len; ++ ++ if (PAGE_START(addr + sizeof (unw_word_t) - 1) == PAGE_START(addr)) ++ len = PAGE_SIZE; ++ else ++ len = PAGE_SIZE * 2; ++ ++ addr = PAGE_START(addr); ++ ++ if (addr == 0) ++ return -1; ++ ++ if (is_cached_valid_mem(addr)) ++ return 0; ++ ++ if (mem_validate_func ((void *) addr, len) == -1) ++ return -1; ++ ++ cache_valid_mem(addr); ++ ++ return 0; ++} ++ ++static int ++access_mem (unw_addr_space_t as, unw_word_t addr, unw_word_t *val, int write, ++ void *arg) ++{ ++ if (unlikely (write)) ++ { ++ Debug (16, "mem[%llx] <- %llx\n", (long long) addr, (long long) *val); ++ *(unw_word_t *) (intptr_t) addr = *val; ++ } ++ else ++ { ++ /* validate address */ ++ const struct cursor *c = (const struct cursor *)arg; ++ if (likely (c != NULL) && unlikely (c->validate) ++ && unlikely (validate_mem (addr))) { ++ Debug (16, "mem[%016lx] -> invalid\n", addr); ++ return -1; ++ } ++ *val = *(unw_word_t *) (intptr_t) addr; ++ Debug (16, "mem[%llx] -> %llx\n", (long long) addr, (long long) *val); ++ } ++ return 0; ++} ++ ++static int ++access_reg (unw_addr_space_t as, unw_regnum_t reg, unw_word_t *val, int write, ++ void *arg) ++{ ++ unw_word_t *addr; ++ ucontext_t *uc = ((struct cursor *)arg)->uc; ++ ++ if (unw_is_fpreg (reg)) ++ goto badreg; ++ ++ Debug (16, "reg = %s\n", unw_regname (reg)); ++ if (!(addr = uc_addr (uc, reg))) ++ goto badreg; ++ ++ if (write) ++ { ++ *(unw_word_t *) (intptr_t) addr = (unw_word_t) *val; ++ Debug (12, "%s <- %llx\n", unw_regname (reg), (long long) *val); ++ } ++ else ++ { ++ *val = (unw_word_t) *(unw_word_t *) (intptr_t) addr; ++ Debug (12, "%s -> %llx\n", unw_regname (reg), (long long) *val); ++ } ++ return 0; ++ ++ badreg: ++ Debug (1, "bad register number %u\n", reg); ++ return -UNW_EBADREG; ++} ++ ++static int ++access_fpreg (unw_addr_space_t as, unw_regnum_t reg, unw_fpreg_t *val, ++ int write, void *arg) ++{ ++ return 0; ++} ++ ++static int ++get_static_proc_name (unw_addr_space_t as, unw_word_t ip, ++ char *buf, size_t buf_len, unw_word_t *offp, ++ void *arg) ++{ ++ return elf_w (get_proc_name) (as, getpid (), ip, buf, buf_len, offp); ++} ++ ++HIDDEN void ++loongarch64_local_addr_space_init (void) ++{ ++ memset (&local_addr_space, 0, sizeof (local_addr_space)); ++ ++ local_addr_space.caching_policy = UNW_CACHE_GLOBAL; ++ local_addr_space.acc.find_proc_info = dwarf_find_proc_info; ++ local_addr_space.acc.put_unwind_info = put_unwind_info; ++ local_addr_space.acc.get_dyn_info_list_addr = get_dyn_info_list_addr; ++ local_addr_space.acc.access_mem = access_mem; ++ local_addr_space.acc.access_reg = access_reg; ++ local_addr_space.acc.access_fpreg = access_fpreg; ++ local_addr_space.acc.resume = loongarch64_local_resume; ++ local_addr_space.acc.get_proc_name = get_static_proc_name; ++ unw_flush_cache (&local_addr_space, 0, 0); ++} ++ ++#endif /* !UNW_REMOTE_ONLY */ +diff --git a/src/loongarch64/Ginit_local.c b/src/loongarch64/Ginit_local.c +new file mode 100644 +index 0000000..977789d +--- /dev/null ++++ b/src/loongarch64/Ginit_local.c +@@ -0,0 +1,80 @@ ++/* libunwind - a platform-independent unwind library ++ Copyright (C) 2008 CodeSourcery ++ Copyright (C) 2021 Loongson Technology Corporation Limited ++ ++This file is part of libunwind. ++ ++Permission is hereby granted, free of charge, to any person obtaining ++a copy of this software and associated documentation files (the ++"Software"), to deal in the Software without restriction, including ++without limitation the rights to use, copy, modify, merge, publish, ++distribute, sublicense, and/or sell copies of the Software, and to ++permit persons to whom the Software is furnished to do so, subject to ++the following conditions: ++ ++The above copyright notice and this permission notice shall be ++included in all copies or substantial portions of the Software. ++ ++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, ++EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF ++MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND ++NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE ++LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION ++OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION ++WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ ++ ++#include "unwind_i.h" ++#include "init.h" ++ ++#ifdef UNW_REMOTE_ONLY ++ ++int ++unw_init_local (unw_cursor_t *cursor, ucontext_t *uc) ++{ ++ return -UNW_EINVAL; ++} ++ ++#else /* !UNW_REMOTE_ONLY */ ++ ++static int ++unw_init_local_common(unw_cursor_t *cursor, ucontext_t *uc, unsigned use_prev_instr) ++{ ++ struct cursor *c = (struct cursor *) cursor; ++ ++ if (!atomic_load(&tdep_init_done)) ++ tdep_init (); ++ ++ Debug (1, "(cursor=%p)\n", c); ++ ++ c->dwarf.as = unw_local_addr_space; ++ c->dwarf.as_arg = c; ++ c->uc = uc; ++ c->validate = 0; ++ ++ return common_init (c, use_prev_instr); ++} ++ ++int ++unw_init_local(unw_cursor_t *cursor, ucontext_t *uc) ++{ ++ return unw_init_local_common(cursor, uc, 1); ++} ++ ++int ++unw_init_local2 (unw_cursor_t *cursor, ucontext_t *uc, int flag) ++{ ++ if (!flag) ++ { ++ return unw_init_local_common(cursor, uc, 1); ++ } ++ else if (flag == UNW_INIT_SIGNAL_FRAME) ++ { ++ return unw_init_local_common(cursor, uc, 0); ++ } ++ else ++ { ++ return -UNW_EINVAL; ++ } ++} ++ ++#endif /* !UNW_REMOTE_ONLY */ +diff --git a/src/loongarch64/Ginit_remote.c b/src/loongarch64/Ginit_remote.c +new file mode 100644 +index 0000000..4a17a8a +--- /dev/null ++++ b/src/loongarch64/Ginit_remote.c +@@ -0,0 +1,56 @@ ++/* libunwind - a platform-independent unwind library ++ Copyright (C) 2008 CodeSourcery ++ Copyright (C) 2021 Loongson Technology Corporation Limited ++ ++This file is part of libunwind. ++ ++Permission is hereby granted, free of charge, to any person obtaining ++a copy of this software and associated documentation files (the ++"Software"), to deal in the Software without restriction, including ++without limitation the rights to use, copy, modify, merge, publish, ++distribute, sublicense, and/or sell copies of the Software, and to ++permit persons to whom the Software is furnished to do so, subject to ++the following conditions: ++ ++The above copyright notice and this permission notice shall be ++included in all copies or substantial portions of the Software. ++ ++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, ++EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF ++MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND ++NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE ++LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION ++OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION ++WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ ++ ++#include "init.h" ++#include "unwind_i.h" ++ ++int ++unw_init_remote (unw_cursor_t *cursor, unw_addr_space_t as, void *as_arg) ++{ ++#ifdef UNW_LOCAL_ONLY ++ return -UNW_EINVAL; ++#else /* !UNW_LOCAL_ONLY */ ++ struct cursor *c = (struct cursor *) cursor; ++ ++ if (!tdep_init_done) ++ tdep_init (); ++ ++ Debug (1, "(cursor=%p)\n", c); ++ ++ c->dwarf.as = as; ++ if (as == unw_local_addr_space) ++ { ++ c->dwarf.as_arg = c; ++ c->uc = as_arg; ++ } ++ else ++ { ++ c->dwarf.as_arg = as_arg; ++ c->uc = 0; ++ } ++ ++ return common_init (c, 0); ++#endif /* !UNW_LOCAL_ONLY */ ++} +diff --git a/src/loongarch64/Gis_signal_frame.c b/src/loongarch64/Gis_signal_frame.c +new file mode 100644 +index 0000000..bf7677d +--- /dev/null ++++ b/src/loongarch64/Gis_signal_frame.c +@@ -0,0 +1,71 @@ ++/* libunwind - a platform-independent unwind library ++ Copyright (C) 2008 CodeSourcery ++ Copyright (C) 2021 Loongson Technology Corporation Limited ++ ++This file is part of libunwind. ++ ++Permission is hereby granted, free of charge, to any person obtaining ++a copy of this software and associated documentation files (the ++"Software"), to deal in the Software without restriction, including ++without limitation the rights to use, copy, modify, merge, publish, ++distribute, sublicense, and/or sell copies of the Software, and to ++permit persons to whom the Software is furnished to do so, subject to ++the following conditions: ++ ++The above copyright notice and this permission notice shall be ++included in all copies or substantial portions of the Software. ++ ++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, ++EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF ++MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND ++NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE ++LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION ++OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION ++WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ ++ ++#include "unwind_i.h" ++#include ++ ++/* ++ arch/loongarch/vdso/sigreturn.S: ++ ++ 0000000000000000 <__vdso_rt_sigreturn>: ++ 0: 03822c0b ori $r11,$r0,0x8b ++ 4: 002b0000 syscall 0x0 ++*/ ++ ++#define SIGRETURN_W0 0x03822c0b ++#define SIGRETURN_W1 0x002b0000 ++ ++int ++unw_is_signal_frame (unw_cursor_t *cursor) ++{ ++ struct cursor *c = (struct cursor *) cursor; ++ unw_word_t w0, w1, ip; ++ unw_addr_space_t as; ++ unw_accessors_t *a; ++ void *arg; ++ int ret; ++ ++ as = c->dwarf.as; ++ a = unw_get_accessors (as); ++ arg = c->dwarf.as_arg; ++ ++ ip = c->dwarf.ip; ++ ++ /* syscall 0x0 */ ++ if ((ret = (*a->access_mem) (as, ip + 4, &w1, 0, arg)) < 0) ++ return ret; ++ ++ /* ori a7,zero,0x8b */ ++ if ((ret = (*a->access_mem) (as, ip, &w0, 0, arg)) < 0) ++ return ret; ++ ++ if ((w1 & 0xffffffff) == SIGRETURN_W1 && (w0 & 0xffffffff) == SIGRETURN_W0) ++ { ++ Debug (8, "cursor at signal frame\n"); ++ return 1; ++ } ++ ++ return 0; ++} +diff --git a/src/loongarch64/Greg_states_iterate.c b/src/loongarch64/Greg_states_iterate.c +new file mode 100644 +index 0000000..a17dc1b +--- /dev/null ++++ b/src/loongarch64/Greg_states_iterate.c +@@ -0,0 +1,37 @@ ++/* libunwind - a platform-independent unwind library ++ Copyright (c) 2002-2003 Hewlett-Packard Development Company, L.P. ++ Contributed by David Mosberger-Tang ++ ++ Modified for x86_64 by Max Asbock ++ ++This file is part of libunwind. ++ ++Permission is hereby granted, free of charge, to any person obtaining ++a copy of this software and associated documentation files (the ++"Software"), to deal in the Software without restriction, including ++without limitation the rights to use, copy, modify, merge, publish, ++distribute, sublicense, and/or sell copies of the Software, and to ++permit persons to whom the Software is furnished to do so, subject to ++the following conditions: ++ ++The above copyright notice and this permission notice shall be ++included in all copies or substantial portions of the Software. ++ ++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, ++EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF ++MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND ++NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE ++LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION ++OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION ++WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ ++ ++#include "unwind_i.h" ++ ++int ++unw_reg_states_iterate (unw_cursor_t *cursor, ++ unw_reg_states_callback cb, void *token) ++{ ++ struct cursor *c = (struct cursor *) cursor; ++ ++ return dwarf_reg_states_iterate (&c->dwarf, cb, token); ++} +diff --git a/src/loongarch64/Gregs.c b/src/loongarch64/Gregs.c +new file mode 100644 +index 0000000..7c27f0d +--- /dev/null ++++ b/src/loongarch64/Gregs.c +@@ -0,0 +1,109 @@ ++/* libunwind - a platform-independent unwind library ++ Copyright (C) 2008 CodeSourcery ++ Copyright (C) 2021 Loongson Technology Corporation Limited ++ ++This file is part of libunwind. ++ ++Permission is hereby granted, free of charge, to any person obtaining ++a copy of this software and associated documentation files (the ++"Software"), to deal in the Software without restriction, including ++without limitation the rights to use, copy, modify, merge, publish, ++distribute, sublicense, and/or sell copies of the Software, and to ++permit persons to whom the Software is furnished to do so, subject to ++the following conditions: ++ ++The above copyright notice and this permission notice shall be ++included in all copies or substantial portions of the Software. ++ ++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, ++EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF ++MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND ++NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE ++LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION ++OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION ++WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ ++ ++#include "unwind_i.h" ++ ++/* FIXME: The following is probably unfinished and/or at least partly bogus. */ ++ ++HIDDEN int ++tdep_access_reg (struct cursor *c, unw_regnum_t reg, unw_word_t *valp, ++ int write) ++{ ++ dwarf_loc_t loc = DWARF_NULL_LOC; ++ ++ switch (reg) ++ { ++ case UNW_LOONGARCH64_R0: ++ case UNW_LOONGARCH64_R1: ++ case UNW_LOONGARCH64_R2: ++ ++ case UNW_LOONGARCH64_R4: ++ case UNW_LOONGARCH64_R5: ++ case UNW_LOONGARCH64_R6: ++ case UNW_LOONGARCH64_R7: ++ case UNW_LOONGARCH64_R8: ++ case UNW_LOONGARCH64_R9: ++ case UNW_LOONGARCH64_R10: ++ case UNW_LOONGARCH64_R11: ++ case UNW_LOONGARCH64_R12: ++ case UNW_LOONGARCH64_R13: ++ case UNW_LOONGARCH64_R14: ++ case UNW_LOONGARCH64_R15: ++ case UNW_LOONGARCH64_R16: ++ case UNW_LOONGARCH64_R17: ++ case UNW_LOONGARCH64_R18: ++ case UNW_LOONGARCH64_R19: ++ case UNW_LOONGARCH64_R20: ++ case UNW_LOONGARCH64_R21: ++ case UNW_LOONGARCH64_R22: ++ case UNW_LOONGARCH64_R23: ++ case UNW_LOONGARCH64_R24: ++ case UNW_LOONGARCH64_R25: ++ case UNW_LOONGARCH64_R26: ++ case UNW_LOONGARCH64_R27: ++ case UNW_LOONGARCH64_R28: ++ case UNW_LOONGARCH64_R29: ++ case UNW_LOONGARCH64_R30: ++ case UNW_LOONGARCH64_R31: ++ loc = c->dwarf.loc[reg - UNW_LOONGARCH64_R0]; ++ break; ++ ++ case UNW_LOONGARCH64_PC: ++ if (write) ++ { ++ Debug (16, "pc is now 0x%lx\n", *valp); ++ c->dwarf.ip = *valp; ++ } ++ loc = c->dwarf.loc[reg]; ++ break; ++ case UNW_TDEP_SP: /* UNW_LOONGARCH64_R3 */ ++ case UNW_LOONGARCH64_CFA: ++ if (write) ++ return -UNW_EREADONLYREG; ++ *valp = c->dwarf.cfa; ++ return 0; ++ ++ /* FIXME: IP? Copro & shadow registers? */ ++ ++ default: ++ Debug (1, "bad register number %u\n", reg); ++ return -UNW_EBADREG; ++ } ++ ++ if (write) ++ return dwarf_put (&c->dwarf, loc, *valp); ++ else ++ return dwarf_get (&c->dwarf, loc, valp); ++ ++} ++ ++/* FIXME for LoongArch64. */ ++ ++HIDDEN int ++tdep_access_fpreg (struct cursor *c, unw_regnum_t reg, unw_fpreg_t *valp, ++ int write) ++{ ++ return -UNW_EBADREG; ++} +diff --git a/src/loongarch64/Gresume.c b/src/loongarch64/Gresume.c +new file mode 100644 +index 0000000..9a9c717 +--- /dev/null ++++ b/src/loongarch64/Gresume.c +@@ -0,0 +1,132 @@ ++/* libunwind - a platform-independent unwind library ++ Copyright (C) 2008 CodeSourcery ++ Copyright (C) 2021 Loongson Technology Corporation Limited ++ ++This file is part of libunwind. ++ ++Permission is hereby granted, free of charge, to any person obtaining ++a copy of this software and associated documentation files (the ++"Software"), to deal in the Software without restriction, including ++without limitation the rights to use, copy, modify, merge, publish, ++distribute, sublicense, and/or sell copies of the Software, and to ++permit persons to whom the Software is furnished to do so, subject to ++the following conditions: ++ ++The above copyright notice and this permission notice shall be ++included in all copies or substantial portions of the Software. ++ ++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, ++EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF ++MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND ++NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE ++LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION ++OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION ++WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ ++ ++/* FIXME for LoongArch64. */ ++ ++#include ++ ++#include "unwind_i.h" ++ ++#ifndef UNW_REMOTE_ONLY ++ ++HIDDEN inline int ++loongarch64_local_resume (unw_addr_space_t as, unw_cursor_t *cursor, void *arg) ++{ ++ struct cursor *c = (struct cursor *) cursor; ++ unw_tdep_context_t *uc = c->uc; ++ ++ if (c->sigcontext_format == LOONGARCH64_SCF_NONE) ++ { ++ /* Since there are no signals involved here we restore EH and non scratch ++ registers only. */ ++ unsigned long sp = uc->uc_mcontext.__gregs[3]; ++ unsigned long ra = uc->uc_mcontext.__gregs[1]; ++ ++ asm volatile ( ++ "move $t0, %0\n" ++ "move $t1, %1\n" ++ "move $t2, %2\n" ++ "ld.d $fp, $t0, 22*8\n" ++ "ld.d $s0, $t0, 23*8\n" ++ "ld.d $s1, $t0, 24*8\n" ++ "ld.d $s2, $t0, 25*8\n" ++ "ld.d $s3, $t0, 26*8\n" ++ "ld.d $s4, $t0, 27*8\n" ++ "ld.d $s5, $t0, 28*8\n" ++ "ld.d $s6, $t0, 29*8\n" ++ "ld.d $s7, $t0, 30*8\n" ++ "ld.d $s8, $t0, 31*8\n" ++ "move $ra, $t2\n" ++ "move $sp, $t1\n" ++ "jirl $r0, $ra, 0\n" ++ : ++ : "r" (uc->uc_mcontext.__gregs), ++ "r" (sp), ++ "r" (ra) ++ ); ++ } ++ else /* c->sigcontext_format == LOONGARCH64_SCF_LINUX_RT_SIGFRAME */ ++ { ++ int i; ++ struct sigcontext *sc = (struct sigcontext *) c->sigcontext_addr; ++ ++ sc->sc_pc = c->dwarf.ip; ++ for (i = UNW_LOONGARCH64_R0; i <= UNW_LOONGARCH64_R31; i++) ++ sc->sc_regs[i] = uc->uc_mcontext.__gregs[i]; ++ ++ Debug (8, "resuming at ip=0x%lx via sigreturn() (trampoline @ 0x%lx, sp @ 0x%lx)\n", ++ c->dwarf.ip, c->sigcontext_pc, c->sigcontext_sp); ++ ++ asm volatile ( ++ "move $sp, %0\n" ++ "jirl $r0, %1, 0\n" ++ : : "r" (c->sigcontext_sp), "r" (c->sigcontext_pc) ++ ); ++ } ++ unreachable(); ++ ++ return -UNW_EINVAL; ++} ++ ++#endif /* !UNW_REMOTE_ONLY */ ++ ++static inline void ++establish_machine_state (struct cursor *c) ++{ ++ unw_addr_space_t as = c->dwarf.as; ++ void *arg = c->dwarf.as_arg; ++ unw_word_t val; ++ int reg; ++ ++ Debug (8, "copying out cursor state\n"); ++ ++ for (reg = UNW_LOONGARCH64_R0; reg <= UNW_LOONGARCH64_R31; reg++) ++ { ++ Debug (16, "copying %s %d\n", unw_regname (reg), reg); ++ if (tdep_access_reg (c, reg, &val, 0) >= 0) ++ as->acc.access_reg (as, reg, &val, 1, arg); ++ } ++} ++ ++int ++unw_resume (unw_cursor_t *cursor) ++{ ++ struct cursor *c = (struct cursor *) cursor; ++ ++ Debug (1, "(cursor=%p)\n", c); ++ ++ if (!c->dwarf.ip) ++ { ++ /* This can happen easily when the frame-chain gets truncated ++ due to bad or missing unwind-info. */ ++ Debug (1, "refusing to resume execution at address 0\n"); ++ return -UNW_EINVAL; ++ } ++ ++ establish_machine_state (c); ++ ++ return (*c->dwarf.as->acc.resume) (c->dwarf.as, (unw_cursor_t *) c, ++ c->dwarf.as_arg); ++} +diff --git a/src/loongarch64/Gstep.c b/src/loongarch64/Gstep.c +new file mode 100644 +index 0000000..5743694 +--- /dev/null ++++ b/src/loongarch64/Gstep.c +@@ -0,0 +1,145 @@ ++/* libunwind - a platform-independent unwind library ++ Copyright (C) 2008 CodeSourcery ++ Copyright (C) 2015 Imagination Technologies Limited ++ Copyright (C) 2021 Loongson Technology Corporation Limited ++ ++This file is part of libunwind. ++ ++Permission is hereby granted, free of charge, to any person obtaining ++a copy of this software and associated documentation files (the ++"Software"), to deal in the Software without restriction, including ++without limitation the rights to use, copy, modify, merge, publish, ++distribute, sublicense, and/or sell copies of the Software, and to ++permit persons to whom the Software is furnished to do so, subject to ++the following conditions: ++ ++The above copyright notice and this permission notice shall be ++included in all copies or substantial portions of the Software. ++ ++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, ++EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF ++MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND ++NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE ++LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION ++OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION ++WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ ++ ++#include "unwind_i.h" ++#include "offsets.h" ++ ++static int ++loongarch64_handle_signal_frame (unw_cursor_t *cursor) ++{ ++ struct cursor *c = (struct cursor *) cursor; ++ unw_word_t sc_addr, sp_addr = c->dwarf.cfa; ++ unw_word_t ra, fp; ++ int ret; ++ ++ if (unw_is_signal_frame (cursor)) { ++ sc_addr = sp_addr + LINUX_SF_TRAMP_SIZE + sizeof (siginfo_t) + ++ LINUX_UC_MCONTEXT_OFF; ++ } else { ++ c->sigcontext_format = LOONGARCH64_SCF_NONE; ++ return -UNW_EUNSPEC; ++ } ++ ++ c->sigcontext_addr = sc_addr; ++ ++ /* Save the SP and PC to be able to return execution at this point ++ later in time (unw_resume). */ ++ c->sigcontext_sp = c->dwarf.cfa; ++ c->sigcontext_pc = c->dwarf.ip; ++ c->sigcontext_format = LOONGARCH64_SCF_LINUX_RT_SIGFRAME; ++ ++ /* Update the dwarf cursor. ++ Set the location of the registers to the corresponding addresses of the ++ uc_mcontext / sigcontext structure contents. */ ++ ++ c->dwarf.loc[UNW_LOONGARCH64_R0] = DWARF_LOC (sc_addr + LINUX_SC_R0_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_R1] = DWARF_LOC (sc_addr + LINUX_SC_R1_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_R2] = DWARF_LOC (sc_addr + LINUX_SC_R2_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_R3] = DWARF_LOC (sc_addr + LINUX_SC_R3_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_R4] = DWARF_LOC (sc_addr + LINUX_SC_R4_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_R5] = DWARF_LOC (sc_addr + LINUX_SC_R5_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_R6] = DWARF_LOC (sc_addr + LINUX_SC_R6_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_R7] = DWARF_LOC (sc_addr + LINUX_SC_R7_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_R8] = DWARF_LOC (sc_addr + LINUX_SC_R8_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_R9] = DWARF_LOC (sc_addr + LINUX_SC_R9_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_R10] = DWARF_LOC (sc_addr + LINUX_SC_R10_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_R11] = DWARF_LOC (sc_addr + LINUX_SC_R11_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_R12] = DWARF_LOC (sc_addr + LINUX_SC_R12_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_R13] = DWARF_LOC (sc_addr + LINUX_SC_R13_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_R14] = DWARF_LOC (sc_addr + LINUX_SC_R14_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_R15] = DWARF_LOC (sc_addr + LINUX_SC_R15_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_R16] = DWARF_LOC (sc_addr + LINUX_SC_R16_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_R17] = DWARF_LOC (sc_addr + LINUX_SC_R17_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_R18] = DWARF_LOC (sc_addr + LINUX_SC_R18_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_R19] = DWARF_LOC (sc_addr + LINUX_SC_R19_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_R20] = DWARF_LOC (sc_addr + LINUX_SC_R20_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_R21] = DWARF_LOC (sc_addr + LINUX_SC_R21_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_R22] = DWARF_LOC (sc_addr + LINUX_SC_R22_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_R23] = DWARF_LOC (sc_addr + LINUX_SC_R23_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_R24] = DWARF_LOC (sc_addr + LINUX_SC_R24_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_R25] = DWARF_LOC (sc_addr + LINUX_SC_R25_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_R26] = DWARF_LOC (sc_addr + LINUX_SC_R26_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_R27] = DWARF_LOC (sc_addr + LINUX_SC_R27_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_R28] = DWARF_LOC (sc_addr + LINUX_SC_R28_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_R29] = DWARF_LOC (sc_addr + LINUX_SC_R29_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_R30] = DWARF_LOC (sc_addr + LINUX_SC_R30_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_R31] = DWARF_LOC (sc_addr + LINUX_SC_R31_OFF, 0); ++ c->dwarf.loc[UNW_LOONGARCH64_PC] = DWARF_LOC (sc_addr + LINUX_SC_PC_OFF, 0); ++ ++ /* Set SP/CFA and PC/IP. */ ++ dwarf_get (&c->dwarf, c->dwarf.loc[UNW_LOONGARCH64_R3], &c->dwarf.cfa); ++ ++ if ((ret = dwarf_get(&c->dwarf, DWARF_LOC(sc_addr + LINUX_SC_PC_OFF, 0), ++ &c->dwarf.ip)) < 0) ++ return ret; ++ ++ if ((ret = dwarf_get(&c->dwarf, DWARF_LOC(sc_addr + LINUX_SC_R1_OFF, 0), ++ &ra)) < 0) ++ return ret; ++ if ((ret = dwarf_get(&c->dwarf, DWARF_LOC(sc_addr + LINUX_SC_R22_OFF, 0), ++ &fp)) < 0) ++ return ret; ++ ++ Debug (2, "SH (ip=0x%016llx, ra=0x%016llx, sp=0x%016llx, fp=0x%016llx)\n", ++ (unsigned long long)c->dwarf.ip, (unsigned long long)ra, ++ (unsigned long long)c->dwarf.cfa, (unsigned long long)fp); ++ ++ c->dwarf.pi_valid = 0; ++ c->dwarf.use_prev_instr = 0; ++ ++ return 1; ++ ++} ++ ++int ++unw_step (unw_cursor_t *cursor) ++{ ++ struct cursor *c = (struct cursor *) cursor; ++ int validate = c->validate; ++ int ret; ++ ++ Debug (1, "(cursor=%p, ip=0x%016lx, sp=0x%016lx)\n", ++ c, c->dwarf.ip, c->dwarf.cfa); ++ ++ ret = unw_is_signal_frame (cursor); ++ if (ret > 0) ++ return loongarch64_handle_signal_frame (cursor); ++ ++ /* Not a signal frame, try DWARF-based unwinding. */ ++ ret = dwarf_step (&c->dwarf); ++ ++ /* Restore default memory validation state */ ++ c->validate = validate; ++ ++ if (unlikely (ret == -UNW_ESTOPUNWIND)) ++ return ret; ++ ++ /* Dwarf unwinding didn't work, stop. */ ++ if (unlikely (ret < 0)) ++ return 0; ++ ++ return (c->dwarf.ip == 0) ? 0 : 1; ++} +diff --git a/src/loongarch64/Lapply_reg_state.c b/src/loongarch64/Lapply_reg_state.c +new file mode 100644 +index 0000000..7ebada4 +--- /dev/null ++++ b/src/loongarch64/Lapply_reg_state.c +@@ -0,0 +1,5 @@ ++#define UNW_LOCAL_ONLY ++#include ++#if defined(UNW_LOCAL_ONLY) && !defined(UNW_REMOTE_ONLY) ++#include "Gapply_reg_state.c" ++#endif +diff --git a/src/loongarch64/Lcreate_addr_space.c b/src/loongarch64/Lcreate_addr_space.c +new file mode 100644 +index 0000000..0f2dc6b +--- /dev/null ++++ b/src/loongarch64/Lcreate_addr_space.c +@@ -0,0 +1,5 @@ ++#define UNW_LOCAL_ONLY ++#include ++#if defined(UNW_LOCAL_ONLY) && !defined(UNW_REMOTE_ONLY) ++#include "Gcreate_addr_space.c" ++#endif +diff --git a/src/loongarch64/Lget_proc_info.c b/src/loongarch64/Lget_proc_info.c +new file mode 100644 +index 0000000..69028b0 +--- /dev/null ++++ b/src/loongarch64/Lget_proc_info.c +@@ -0,0 +1,5 @@ ++#define UNW_LOCAL_ONLY ++#include ++#if defined(UNW_LOCAL_ONLY) && !defined(UNW_REMOTE_ONLY) ++#include "Gget_proc_info.c" ++#endif +diff --git a/src/loongarch64/Lget_save_loc.c b/src/loongarch64/Lget_save_loc.c +new file mode 100644 +index 0000000..9ea048a +--- /dev/null ++++ b/src/loongarch64/Lget_save_loc.c +@@ -0,0 +1,5 @@ ++#define UNW_LOCAL_ONLY ++#include ++#if defined(UNW_LOCAL_ONLY) && !defined(UNW_REMOTE_ONLY) ++#include "Gget_save_loc.c" ++#endif +diff --git a/src/loongarch64/Lglobal.c b/src/loongarch64/Lglobal.c +new file mode 100644 +index 0000000..6d7b489 +--- /dev/null ++++ b/src/loongarch64/Lglobal.c +@@ -0,0 +1,5 @@ ++#define UNW_LOCAL_ONLY ++#include ++#if defined(UNW_LOCAL_ONLY) && !defined(UNW_REMOTE_ONLY) ++#include "Gglobal.c" ++#endif +diff --git a/src/loongarch64/Linit.c b/src/loongarch64/Linit.c +new file mode 100644 +index 0000000..e9abfdd +--- /dev/null ++++ b/src/loongarch64/Linit.c +@@ -0,0 +1,5 @@ ++#define UNW_LOCAL_ONLY ++#include ++#if defined(UNW_LOCAL_ONLY) && !defined(UNW_REMOTE_ONLY) ++#include "Ginit.c" ++#endif +diff --git a/src/loongarch64/Linit_local.c b/src/loongarch64/Linit_local.c +new file mode 100644 +index 0000000..68a1687 +--- /dev/null ++++ b/src/loongarch64/Linit_local.c +@@ -0,0 +1,5 @@ ++#define UNW_LOCAL_ONLY ++#include ++#if defined(UNW_LOCAL_ONLY) && !defined(UNW_REMOTE_ONLY) ++#include "Ginit_local.c" ++#endif +diff --git a/src/loongarch64/Linit_remote.c b/src/loongarch64/Linit_remote.c +new file mode 100644 +index 0000000..58cb04a +--- /dev/null ++++ b/src/loongarch64/Linit_remote.c +@@ -0,0 +1,5 @@ ++#define UNW_LOCAL_ONLY ++#include ++#if defined(UNW_LOCAL_ONLY) && !defined(UNW_REMOTE_ONLY) ++#include "Ginit_remote.c" ++#endif +diff --git a/src/loongarch64/Lis_signal_frame.c b/src/loongarch64/Lis_signal_frame.c +new file mode 100644 +index 0000000..b9a7c4f +--- /dev/null ++++ b/src/loongarch64/Lis_signal_frame.c +@@ -0,0 +1,5 @@ ++#define UNW_LOCAL_ONLY ++#include ++#if defined(UNW_LOCAL_ONLY) && !defined(UNW_REMOTE_ONLY) ++#include "Gis_signal_frame.c" ++#endif +diff --git a/src/loongarch64/Lreg_states_iterate.c b/src/loongarch64/Lreg_states_iterate.c +new file mode 100644 +index 0000000..f1eb1e7 +--- /dev/null ++++ b/src/loongarch64/Lreg_states_iterate.c +@@ -0,0 +1,5 @@ ++#define UNW_LOCAL_ONLY ++#include ++#if defined(UNW_LOCAL_ONLY) && !defined(UNW_REMOTE_ONLY) ++#include "Greg_states_iterate.c" ++#endif +diff --git a/src/loongarch64/Lregs.c b/src/loongarch64/Lregs.c +new file mode 100644 +index 0000000..2c9c75c +--- /dev/null ++++ b/src/loongarch64/Lregs.c +@@ -0,0 +1,5 @@ ++#define UNW_LOCAL_ONLY ++#include ++#if defined(UNW_LOCAL_ONLY) && !defined(UNW_REMOTE_ONLY) ++#include "Gregs.c" ++#endif +diff --git a/src/loongarch64/Lresume.c b/src/loongarch64/Lresume.c +new file mode 100644 +index 0000000..41a8cf0 +--- /dev/null ++++ b/src/loongarch64/Lresume.c +@@ -0,0 +1,5 @@ ++#define UNW_LOCAL_ONLY ++#include ++#if defined(UNW_LOCAL_ONLY) && !defined(UNW_REMOTE_ONLY) ++#include "Gresume.c" ++#endif +diff --git a/src/loongarch64/Lstep.c b/src/loongarch64/Lstep.c +new file mode 100644 +index 0000000..c1ac3c7 +--- /dev/null ++++ b/src/loongarch64/Lstep.c +@@ -0,0 +1,5 @@ ++#define UNW_LOCAL_ONLY ++#include ++#if defined(UNW_LOCAL_ONLY) && !defined(UNW_REMOTE_ONLY) ++#include "Gstep.c" ++#endif +diff --git a/src/loongarch64/getcontext.S b/src/loongarch64/getcontext.S +new file mode 100644 +index 0000000..3344fc2 +--- /dev/null ++++ b/src/loongarch64/getcontext.S +@@ -0,0 +1,61 @@ ++/* libunwind - a platform-independent unwind library ++ Copyright (C) 2008 CodeSourcery ++ Copyright (C) 2012 Tommi Rantala ++ Copyright (C) 2021 Loongson Technology Corporation Limited ++ ++This file is part of libunwind. ++ ++Permission is hereby granted, free of charge, to any person obtaining ++a copy of this software and associated documentation files (the ++"Software"), to deal in the Software without restriction, including ++without limitation the rights to use, copy, modify, merge, publish, ++distribute, sublicense, and/or sell copies of the Software, and to ++permit persons to whom the Software is furnished to do so, subject to ++the following conditions: ++ ++The above copyright notice and this permission notice shall be ++included in all copies or substantial portions of the Software. ++ ++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, ++EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF ++MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND ++NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE ++LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION ++OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION ++WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ ++ ++#include "offsets.h" ++#include ++ .text ++ ++#define SREG(X) st.d $r##X, $r4, (LINUX_UC_MCONTEXT_GREGS + 8 * X) ++#define SPC st.d $r1, $r4, (LINUX_UC_MCONTEXT_PC) ++ ++ .global _Uloongarch64_getcontext ++ .type _Uloongarch64_getcontext, %function ++ ++_Uloongarch64_getcontext: ++ .cfi_startproc ++ SREG(0) ++ SREG(1) ++ SREG(3) ++ SREG(21) ++ SREG(22) ++ SREG(23) ++ SREG(24) ++ SREG(25) ++ SREG(26) ++ SREG(27) ++ SREG(28) ++ SREG(29) ++ SREG(30) ++ SREG(31) ++ ++ SPC ++ ++ ori $r4, $r0, 0 ++ jirl $r0, $r1, 0 ++ ++ .cfi_endproc ++ ++ .size _Uloongarch64_getcontext, .-_Uloongarch64_getcontext +diff --git a/src/loongarch64/init.h b/src/loongarch64/init.h +new file mode 100644 +index 0000000..2d8bca0 +--- /dev/null ++++ b/src/loongarch64/init.h +@@ -0,0 +1,64 @@ ++/* libunwind - a platform-independent unwind library ++ Copyright (C) 2008 CodeSourcery ++ Copyright (C) 2021 Loongson Technology Corporation Limited ++ ++This file is part of libunwind. ++ ++Permission is hereby granted, free of charge, to any person obtaining ++a copy of this software and associated documentation files (the ++"Software"), to deal in the Software without restriction, including ++without limitation the rights to use, copy, modify, merge, publish, ++distribute, sublicense, and/or sell copies of the Software, and to ++permit persons to whom the Software is furnished to do so, subject to ++the following conditions: ++ ++The above copyright notice and this permission notice shall be ++included in all copies or substantial portions of the Software. ++ ++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, ++EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF ++MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND ++NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE ++LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION ++OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION ++WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ ++ ++#include "unwind_i.h" ++ ++static inline int ++common_init (struct cursor *c, unsigned use_prev_instr) ++{ ++ int ret, i; ++ ++ for (i = UNW_LOONGARCH64_R0; i <= UNW_LOONGARCH64_R31; i++) ++ c->dwarf.loc[i] = DWARF_REG_LOC (&c->dwarf, i); ++ ++ for (i = UNW_LOONGARCH64_R31 + 1; i < DWARF_NUM_PRESERVED_REGS; i++) ++ c->dwarf.loc[i] = DWARF_NULL_LOC; ++ ++ c->dwarf.loc[UNW_LOONGARCH64_PC] = DWARF_REG_LOC (&c->dwarf, UNW_LOONGARCH64_PC); ++ ++ ret = dwarf_get (&c->dwarf, c->dwarf.loc[UNW_LOONGARCH64_PC], &c->dwarf.ip); ++ if (ret < 0) ++ return ret; ++ ++ ret = dwarf_get (&c->dwarf, DWARF_REG_LOC (&c->dwarf, UNW_LOONGARCH64_R3), ++ &c->dwarf.cfa); ++ if (ret < 0) ++ return ret; ++ ++ c->sigcontext_format = LOONGARCH64_SCF_NONE; ++ c->sigcontext_addr = 0; ++ c->sigcontext_sp = 0; ++ c->sigcontext_pc = 0; ++ ++ c->dwarf.args_size = 0; ++ c->dwarf.stash_frames = 0; ++ c->dwarf.use_prev_instr = use_prev_instr; ++ c->dwarf.pi_valid = 0; ++ c->dwarf.pi_is_dynamic = 0; ++ c->dwarf.hint = 0; ++ c->dwarf.prev_rs = 0; ++ ++ return 0; ++} +diff --git a/src/loongarch64/is_fpreg.c b/src/loongarch64/is_fpreg.c +new file mode 100644 +index 0000000..3aa2719 +--- /dev/null ++++ b/src/loongarch64/is_fpreg.c +@@ -0,0 +1,35 @@ ++/* libunwind - a platform-independent unwind library ++ Copyright (C) 2008 CodeSourcery ++ ++This file is part of libunwind. ++ ++Permission is hereby granted, free of charge, to any person obtaining ++a copy of this software and associated documentation files (the ++"Software"), to deal in the Software without restriction, including ++without limitation the rights to use, copy, modify, merge, publish, ++distribute, sublicense, and/or sell copies of the Software, and to ++permit persons to whom the Software is furnished to do so, subject to ++the following conditions: ++ ++The above copyright notice and this permission notice shall be ++included in all copies or substantial portions of the Software. ++ ++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, ++EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF ++MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND ++NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE ++LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION ++OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION ++WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ ++ ++#include "libunwind_i.h" ++ ++/* FIXME: I'm not sure if libunwind's FP register distinction is very useful ++ on LoongArch64. */ ++ ++int ++unw_is_fpreg (int regnum) ++{ ++ /* FIXME: Support FP. */ ++ return 0; ++} +diff --git a/src/loongarch64/offsets.h b/src/loongarch64/offsets.h +new file mode 100644 +index 0000000..9e46cff +--- /dev/null ++++ b/src/loongarch64/offsets.h +@@ -0,0 +1,54 @@ ++/* Linux-specific definitions: */ ++ ++/* Define various structure offsets to simplify cross-compilation. */ ++ ++/* Offsets for LoongArch64 Linux "ucontext_t": */ ++ ++/* First 24 bytes in sigframe are argument save space and padding for ++what used to be signal trampolines. Ref: arch/loongarch/kernel/signal.c */ ++#define LINUX_SF_TRAMP_SIZE 0x18 ++ ++# define LINUX_UC_FLAGS_OFF 0x0 /* offsetof(struct ucontext_t, __uc_flags) */ ++# define LINUX_UC_LINK_OFF 0x8 /* offsetof(struct ucontext_t, uc_link) */ ++# define LINUX_UC_STACK_OFF 0x10 /* offsetof(struct ucontext_t, uc_stack) */ ++# define LINUX_UC_SIGMASK_OFF 0x28 /* offsetof(struct ucontext_t, uc_sigmask) */ ++# define LINUX_UC_MCONTEXT_OFF 0xc0 /* offsetof(struct ucontext_t, uc_mcontext) */ ++ ++# define LINUX_UC_MCONTEXT_PC 0xc0 /* offsetof(struct ucontext_t, uc_mcontext.__pc) */ ++# define LINUX_UC_MCONTEXT_GREGS 0xc8 /* offsetof(struct ucontext_t, uc_mcontext.__gregs) */ ++/* Offsets for AArch64 Linux "struct sigcontext": */ ++#define LINUX_SC_R0_OFF (LINUX_UC_MCONTEXT_GREGS - LINUX_UC_MCONTEXT_OFF) ++#define LINUX_SC_R1_OFF (LINUX_SC_R0_OFF + 1*8) ++#define LINUX_SC_R2_OFF (LINUX_SC_R0_OFF + 2*8) ++#define LINUX_SC_R3_OFF (LINUX_SC_R0_OFF + 3*8) ++#define LINUX_SC_R4_OFF (LINUX_SC_R0_OFF + 4*8) ++#define LINUX_SC_R5_OFF (LINUX_SC_R0_OFF + 5*8) ++#define LINUX_SC_R6_OFF (LINUX_SC_R0_OFF + 6*8) ++#define LINUX_SC_R7_OFF (LINUX_SC_R0_OFF + 7*8) ++#define LINUX_SC_R8_OFF (LINUX_SC_R0_OFF + 8*8) ++#define LINUX_SC_R9_OFF (LINUX_SC_R0_OFF + 9*8) ++#define LINUX_SC_R10_OFF (LINUX_SC_R0_OFF + 10*8) ++#define LINUX_SC_R11_OFF (LINUX_SC_R0_OFF + 11*8) ++#define LINUX_SC_R12_OFF (LINUX_SC_R0_OFF + 12*8) ++#define LINUX_SC_R13_OFF (LINUX_SC_R0_OFF + 13*8) ++#define LINUX_SC_R14_OFF (LINUX_SC_R0_OFF + 14*8) ++#define LINUX_SC_R15_OFF (LINUX_SC_R0_OFF + 15*8) ++#define LINUX_SC_R16_OFF (LINUX_SC_R0_OFF + 16*8) ++#define LINUX_SC_R17_OFF (LINUX_SC_R0_OFF + 17*8) ++#define LINUX_SC_R18_OFF (LINUX_SC_R0_OFF + 18*8) ++#define LINUX_SC_R19_OFF (LINUX_SC_R0_OFF + 19*8) ++#define LINUX_SC_R20_OFF (LINUX_SC_R0_OFF + 20*8) ++#define LINUX_SC_R21_OFF (LINUX_SC_R0_OFF + 21*8) ++#define LINUX_SC_R22_OFF (LINUX_SC_R0_OFF + 22*8) ++#define LINUX_SC_R23_OFF (LINUX_SC_R0_OFF + 23*8) ++#define LINUX_SC_R24_OFF (LINUX_SC_R0_OFF + 24*8) ++#define LINUX_SC_R25_OFF (LINUX_SC_R0_OFF + 25*8) ++#define LINUX_SC_R26_OFF (LINUX_SC_R0_OFF + 26*8) ++#define LINUX_SC_R27_OFF (LINUX_SC_R0_OFF + 27*8) ++#define LINUX_SC_R28_OFF (LINUX_SC_R0_OFF + 28*8) ++#define LINUX_SC_R29_OFF (LINUX_SC_R0_OFF + 29*8) ++#define LINUX_SC_R30_OFF (LINUX_SC_R0_OFF + 30*8) ++#define LINUX_SC_R31_OFF (LINUX_SC_R0_OFF + 31*8) ++ ++#define LINUX_SC_SP_OFF LINUX_SC_R3_OFF ++#define LINUX_SC_PC_OFF (LINUX_UC_MCONTEXT_PC - LINUX_UC_MCONTEXT_OFF) +diff --git a/src/loongarch64/regname.c b/src/loongarch64/regname.c +new file mode 100644 +index 0000000..ef95044 +--- /dev/null ++++ b/src/loongarch64/regname.c +@@ -0,0 +1,50 @@ ++/* libunwind - a platform-independent unwind library ++ Copyright (C) 2008 CodeSourcery ++ Copyright (C) 2021 Loongson Technology Corporation Limited ++ ++This file is part of libunwind. ++ ++Permission is hereby granted, free of charge, to any person obtaining ++a copy of this software and associated documentation files (the ++"Software"), to deal in the Software without restriction, including ++without limitation the rights to use, copy, modify, merge, publish, ++distribute, sublicense, and/or sell copies of the Software, and to ++permit persons to whom the Software is furnished to do so, subject to ++the following conditions: ++ ++The above copyright notice and this permission notice shall be ++included in all copies or substantial portions of the Software. ++ ++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, ++EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF ++MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND ++NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE ++LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION ++OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION ++WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ ++ ++#include "unwind_i.h" ++ ++static const char *regname[] = ++ { ++ /* 0. */ ++ "zero", "ra", "tp", "sp", "a0(v0)", "a1(v1)", "a2", "a3", ++ /* 8. */ ++ "a4", "a5", "a6", "a7", "t0", "t1", "t2", "t3", ++ /* 16. */ ++ "t4", "t5", "t6", "t7", "t8", "reserve", "fp", "s0", ++ /* 24. */ ++ "s1", "s2", "s3", "s4", "s5", "s6", "s7", "s8", ++ ++ /* pc */ ++ "pc" ++ }; ++ ++const char * ++unw_regname (unw_regnum_t reg) ++{ ++ if (reg < (unw_regnum_t) ARRAY_SIZE (regname)) ++ return regname[reg]; ++ else ++ return "???"; ++} +diff --git a/src/loongarch64/siglongjmp.S b/src/loongarch64/siglongjmp.S +new file mode 100644 +index 0000000..ef79343 +--- /dev/null ++++ b/src/loongarch64/siglongjmp.S +@@ -0,0 +1,8 @@ ++ /* Dummy implementation for now. */ ++ ++ .globl _UI_siglongjmp_cont ++ .globl _UI_longjmp_cont ++ ++_UI_siglongjmp_cont: ++_UI_longjmp_cont: ++ jirl $r0, $r1, 0 +diff --git a/src/loongarch64/unwind_i.h b/src/loongarch64/unwind_i.h +new file mode 100644 +index 0000000..86bf4ac +--- /dev/null ++++ b/src/loongarch64/unwind_i.h +@@ -0,0 +1,43 @@ ++/* libunwind - a platform-independent unwind library ++ Copyright (C) 2008 CodeSourcery ++ ++This file is part of libunwind. ++ ++Permission is hereby granted, free of charge, to any person obtaining ++a copy of this software and associated documentation files (the ++"Software"), to deal in the Software without restriction, including ++without limitation the rights to use, copy, modify, merge, publish, ++distribute, sublicense, and/or sell copies of the Software, and to ++permit persons to whom the Software is furnished to do so, subject to ++the following conditions: ++ ++The above copyright notice and this permission notice shall be ++included in all copies or substantial portions of the Software. ++ ++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, ++EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF ++MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND ++NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE ++LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION ++OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION ++WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ ++ ++#ifndef unwind_i_h ++#define unwind_i_h ++ ++#include ++ ++#include ++ ++#include "libunwind_i.h" ++ ++#define loongarch64_lock UNW_OBJ(lock) ++#define loongarch64_local_resume UNW_OBJ(local_resume) ++#define loongarch64_local_addr_space_init UNW_OBJ(local_addr_space_init) ++ ++extern int loongarch64_local_resume (unw_addr_space_t as, unw_cursor_t *cursor, ++ void *arg); ++ ++extern void loongarch64_local_addr_space_init (void); ++ ++#endif /* unwind_i_h */ +diff --git a/src/ptrace/_UPT_reg_offset.c b/src/ptrace/_UPT_reg_offset.c +index 52be799..1f89661 100644 +--- a/src/ptrace/_UPT_reg_offset.c ++++ b/src/ptrace/_UPT_reg_offset.c +@@ -666,6 +666,42 @@ const int _UPT_reg_offset[UNW_REG_LAST + 1] = + [UNW_S390X_F14] = 0x150, + [UNW_S390X_F15] = 0x150, + [UNW_S390X_IP] = 0x08 ++#elif defined(UNW_TARGET_LOONGARCH64) ++# include ++ ++ [UNW_LOONGARCH64_R0] = LOONGARCH_EF_R0, ++ [UNW_LOONGARCH64_R1] = LOONGARCH_EF_R1, ++ [UNW_LOONGARCH64_R2] = LOONGARCH_EF_R2, ++ [UNW_LOONGARCH64_R3] = LOONGARCH_EF_R3, ++ [UNW_LOONGARCH64_R4] = LOONGARCH_EF_R4, ++ [UNW_LOONGARCH64_R5] = LOONGARCH_EF_R5, ++ [UNW_LOONGARCH64_R6] = LOONGARCH_EF_R6, ++ [UNW_LOONGARCH64_R7] = LOONGARCH_EF_R7, ++ [UNW_LOONGARCH64_R8] = LOONGARCH_EF_R8, ++ [UNW_LOONGARCH64_R9] = LOONGARCH_EF_R9, ++ [UNW_LOONGARCH64_R10] = LOONGARCH_EF_R10, ++ [UNW_LOONGARCH64_R11] = LOONGARCH_EF_R11, ++ [UNW_LOONGARCH64_R12] = LOONGARCH_EF_R12, ++ [UNW_LOONGARCH64_R13] = LOONGARCH_EF_R13, ++ [UNW_LOONGARCH64_R14] = LOONGARCH_EF_R14, ++ [UNW_LOONGARCH64_R15] = LOONGARCH_EF_R15, ++ [UNW_LOONGARCH64_R16] = LOONGARCH_EF_R16, ++ [UNW_LOONGARCH64_R17] = LOONGARCH_EF_R17, ++ [UNW_LOONGARCH64_R18] = LOONGARCH_EF_R18, ++ [UNW_LOONGARCH64_R19] = LOONGARCH_EF_R19, ++ [UNW_LOONGARCH64_R20] = LOONGARCH_EF_R20, ++ [UNW_LOONGARCH64_R21] = LOONGARCH_EF_R21, ++ [UNW_LOONGARCH64_R22] = LOONGARCH_EF_R22, ++ [UNW_LOONGARCH64_R23] = LOONGARCH_EF_R23, ++ [UNW_LOONGARCH64_R24] = LOONGARCH_EF_R24, ++ [UNW_LOONGARCH64_R25] = LOONGARCH_EF_R25, ++ [UNW_LOONGARCH64_R26] = LOONGARCH_EF_R26, ++ [UNW_LOONGARCH64_R27] = LOONGARCH_EF_R27, ++ [UNW_LOONGARCH64_R28] = LOONGARCH_EF_R28, ++ [UNW_LOONGARCH64_R29] = LOONGARCH_EF_R29, ++ [UNW_LOONGARCH64_R30] = LOONGARCH_EF_R30, ++ [UNW_LOONGARCH64_R31] = LOONGARCH_EF_R31, ++ [UNW_LOONGARCH64_PC] = LOONGARCH_EF_CSR_ERA + #else + # error Fix me. + #endif +-- +2.27.0 + diff --git a/libunwind.spec b/libunwind.spec index d96b681..32a0db6 100644 --- a/libunwind.spec +++ b/libunwind.spec @@ -1,13 +1,15 @@ Name: libunwind Epoch: 2 Version: 1.5.0 -Release: 2 +Release: 3 Summary: Libunwind provides a C ABI to determine the call-chain of a program License: BSD URL: http://savannah.nongnu.org/projects/libunwind Source: http://download-mirror.savannah.gnu.org/releases/libunwind/libunwind-%{version}.tar.gz -ExclusiveArch: aarch64 %{ix86} x86_64 +Patch0001: 0001-libunwind-1.4.0-add-loongarch64-support.patch + +ExclusiveArch: aarch64 %{ix86} x86_64 loongarch64 BuildRequires: automake libtool autoconf texlive-latex2man @@ -84,6 +86,9 @@ make check || true %{_mandir}/*/* %changelog +* Mon May 16 2022 Huang Yang - 2:1.5.0-3 +- add loongarch64 support + * Tue Apr 26 2022 renhongxun - 2:1.5.0-2 - add epoch -- Gitee